Corey's list looks wild. I decided to experiment with cutting down on Serum Visions, but didn't like it all. I absolutely love the idea of making room for Fields, but I felt the impact of losing card selection especially in game ones.
I was quite confident with my list until the PT, but now I'm trying to find a way to play Fields without sacrificing Serum Visions.
AV vs Search is another point of interest for me. Search is the more powerful card, but AV is not vulnerable against land destruction, which is a huge bonus. I'm currently playing 2-1 split with a second Search in the SB, but I'm likely going to play more with these numbers
What do you think of my grixis deck? Tried to keep the cute stuff out and keep it as lean as possible. Feel like nihil spellbomb somewhere in the SB might be nice, but not sure what to cut. Maybe the surgicals? Will be playing this on MTGO
I follow the Burkhart style deck. I think the most impactful suggestion I have is that Field of Ruin is the Truth, and you should try to fit at least 2 in main deck. I cut 2 Serum Visions to fit it, which I have not missed much, as it simplifies mulligaining decisions and allows me to play more reactively. Field is useful in a lot of match ups that have value lands, and takes of stress from the sideboard for land hate (I currently run 2 Fulminators but am considering going down to 1 since I rarely side it in). For the sideboard, I like having the second Anger to clear boards against Humans, Affinity, and Dredge.
Other than that, are builds are pretty close (-1 Vendi Clique; -1 Logic Knot; -2 Serum Visions; [-1 Disdainful Strike]; +1 Spell Snare; +1 Damnation; +2 Field of Ruin; [+1 Anger of the Gods]).
I was going to buy a playset of Jaces over the weekend, but some Pro tweets (corey included) where so vocal about Jace not going to be freed that I didn't.... so sad Still, I don't see Grixis being the shell for Jace. Grixs' biggest strength is that we play a low-ish land count and extremely cheap spells, so we can catch up by double spelling right from the beggining. Playing a 4 mana sorcery seems contradictory to our pan. Now, UW control... that is a different matter. I think the UW players will definitely want 2, because 3 loyalty is quite low for a PW that 0s a bunch, and perhaps even 3-4 because of how powerful a late game it has.
I’m in the same boat as you, I sometimes play control and have 0 Jaces...Not sure this shell will be a fit for him though as some have said. Pretty sure someone will configure it to be able to. I guess if you can’t play him, just have ways of dealing with him or expect to see him now. Only time will tell what happens.
Commander GUR Maelstrom Wanderer BWU Sydri, Galvanic Genius BGB Meren of Clan Nel Toth WGW Nazahn, Revered Bladesmith RRR Feldon of the Third Path WWW Heliod, God of the Sun
Jace is a huge question mark for me. The ability to shuffle away dead cards in the mid to late game could be a huge deal for a reactive deck like Grixis. On the other hand, tapping 4 mana sorcery speed is still a pretty big investment.
Correct me if you think I'm mistaken here, but Jace pairs the best with discard. As there is no FoW in the format, the only way to guarantee that you nor your Jace will die the turn after you slam it is to pave the way with discard spells. Then once Jace lands, you can use the +0 ability to mitigate the biggest downside those discard spells have, which is being potentially useless in the later game.
I'm not sure whether I'm going to experiment with Jace, but I sure as hell will be prepared to face the card. I have ran just one Creeping Tar Pit for the longest time, but this unbanning definitely has prompted me to up that number. I am also probably going to continue using some additional threats like Young Pyromancer or Vendilion Clique that are not weak to Jace's -1 ability. I will also definitely continue to advocate AV as the primary card advantage spell. Discard spells see more play than ever before and I'm expecting the trend to continue with this unbanning, and AV is the best trump to those strategies.
My guess is Jace will end up being a 1-2-of somewhere in the 75, unless someone can break the formula by finding the shell that can cast Jace and have it not die immediately.
Moved away from the scour and tasigur gameplan in favour of more of a grindy approach.
Also as others have mentioned above, I'm back on ancestral myself over search. Ancestral seems much better situated in the current format as it's harder to interact with especially against the 2 biggest decks that will be experimented with after the banning, control and midrange (jund):
Control can always snare it on the way down even on the draw so it's harder to get it to stick. Especially against UW control they play 8+ land destruction effects in the main so flipping search is usually more of a liability than anything else.
Jund can discard either search or ancestral but at least on the play you can suspend it before they start ripping apart your hand. Jund also has decay and pulse to hit the enchantment and post board are bringing in fulminators for sure to blow up the land half.
There's also mass grave hate to worry about post board and ancestral is easier on the mana too. Search certainly has its upsides but I think those upsides aren't as good in the coming meta. I think ancestral is going to be the stronger card going forward and with Jace to shuffle away extra copies in the late game it seems even better.
I'm only running 2 Jace as I think you definitely don't want to go overboard on him and auto lose versus aggro or combo decks. 2 should be sufficient and I'll bump it up to 3 if it becomes necessary.
I'm only running 2 Jace as I think you definitely don't want to go overboard on him and auto lose versus aggro or combo decks. 2 should be sufficient and I'll bump it up to 3 if it becomes necessary.
I think that a Mainboard-Sideboard Jace split will be the norm. Maybe 2-1 or 3-1 (though 2-1 i find more likely). When he is good, he is fantastic, and you'll definitely want 3-4, but when he is bad, he is atrocious. Hedging your bets by giving you the potential of 3-4 Jaces post board, without going all-in on it game 1 might be a plan.
I'm only running 2 Jace as I think you definitely don't want to go overboard on him and auto lose versus aggro or combo decks. 2 should be sufficient and I'll bump it up to 3 if it becomes necessary.
I think that a Mainboard-Sideboard Jace split will be the norm. Maybe 2-1 or 3-1 (though 2-1 i find more likely). When he is good, he is fantastic, and you'll definitely want 3-4, but when he is bad, he is atrocious. Hedging your bets by giving you the potential of 3-4 Jaces post board, without going all-in on it game 1 might be a plan.
Yeah I could realistically see this as being the case. Gonna test 2 for now and see how that works out. Can't wait til Monday to start jamming games at my store.
My buddy is also going jund now (was playing abzan/rock for a while) so we're gonna playtest a bunch. Should be great
Moved away from the scour and tasigur gameplan in favour of more of a grindy approach.
Also as others have mentioned above, I'm back on ancestral myself over search. Ancestral seems much better situated in the current format as it's harder to interact with especially against the 2 biggest decks that will be experimented with after the banning, control and midrange (jund):
Control can always snare it on the way down even on the draw so it's harder to get it to stick. Especially against UW control they play 8+ land destruction effects in the main so flipping search is usually more of a liability than anything else.
Jund can discard either search or ancestral but at least on the play you can suspend it before they start ripping apart your hand. Jund also has decay and pulse to hit the enchantment and post board are bringing in fulminators for sure to blow up the land half.
There's also mass grave hate to worry about post board and ancestral is easier on the mana too. Search certainly has its upsides but I think those upsides aren't as good in the coming meta. I think ancestral is going to be the stronger card going forward and with Jace to shuffle away extra copies in the late game it seems even better.
I'm only running 2 Jace as I think you definitely don't want to go overboard on him and auto lose versus aggro or combo decks. 2 should be sufficient and I'll bump it up to 3 if it becomes necessary.
I agree with your points on Ancestral, but not on cutting Thought Scours and Tasigurs. How is cutting those two cards making the deck any grindier than it was before? Tasigur certainly lets you grind, and Scour gives you more card selection. You're only making the deck more focused on beating fair creature decks and giving up %-points against combo, ramp/big mana, control and burn.
with 3 Cryptics, 2 Jaces and 2 Damnations your curve is looking atrocious. Some of those cards need to be moved to the SB or cut entirely. Of course we're all looking to experiment with Jace, but basic deck building rules suggest this one isn't going to fly.
I agree with your points on Ancestral, but not on cutting Thought Scours and Tasigurs. How is cutting those two cards making the deck any grindier than it was before? Tasigur certainly lets you grind, and Scour gives you more card selection. You're only making the deck more focused on beating fair creature decks and giving up %-points against combo, ramp/big mana, control and burn.
with 3 Cryptics, 2 Jaces and 2 Damnations your curve is looking atrocious. Some of those cards need to be moved to the SB or cut entirely. Of course we're all looking to experiment with Jace, but basic deck building rules suggest this one isn't going to fly.
Tasigur has been very underwhelming as of late due to being consistently outsized by other creatures or getting easily answered by opposing control or midrange decks. Maybe it's just my experience but he only helps out against big mana and combo decks where I need to get a clock going. I suppose he's non negligible against burn but that matchup is horrendous either way. The clique is a pseudo replacement for him with the advantage of being evasive, having flash and either disrupting their hand or improving my own but the downside of being one power less.
Scour has always seemed like a necessary evil for me and I'd love to be able to play the deck without it. It's certainly not card selection as the mill is completely random, you may or may not mill anything useful (lands, Jace, ancestral). It does provide extra fuel for snaps, kommands and delve which is why it's good but on the other hand it does absolutely nothing to prevent yourself from mana flood or screw for example. With this decklist the choice for me was between scour and serum and I think serum is better for the direction of the deck towards being grindier as serum sets up your draws but scour allows you to accelerate on mana. That's what I meant by grinding, less focus on trying to cheat out a delve creature or flip a search early and more on setting up future draw steps.
I can see how cutting that package does make me slightly worse against big mana and combo (hence the sideboard skewed towards those) but I fail to see how it makes me worse against control. Tasigur was always the worst card in my deck against control, I usually win those games with either bolt snap bolt or out attritioning them with snap and kommand.
As for the curve, I agree that the 2 damnation may be overkill you're right. The idea was being able to sweep the board entirely and then next turn drop a Jace but perhaps that's unnecessary. The overall curve is slightly higher but there's an increased land count to accomodate that. UW and jeskai control often run a very similar if not identical split along their curve (if not going even heavier on sweepers) and that's what I was going off of. The curve being lower makes sense when the gameplan is casting multiple spells early to get ahead but less so when the gameplan is to strap in for the long game and out value your opponents.
If I remove the damnations I will likely replace them with some combination of additional removal, the 2nd clique from the board, or another land and go up a sweeper in the board (either anger or damnation).
I agree that Tasigur has felt smaller than ever before, which is the reason I went down to two copies. However I still think you are giving up too much percentages against many decks, including control - at least nonblack control. Those decks lack a tempo efficient 1-for-1 answer to Tasigur. Even if Tasigur may not finish the job on his own, I've found his mana efficiency key in those MUs. Getting a t2-t3 Tasigur pathed or forcing the opponent to tap out for Verdict puts us significantly ahead.
I definitely like Vendilion Clique, especially if we're interested in setting up Tasigur, but the omnipresence on Lingering Souls makes me afraid on relying on Clique too much.
I also like Serum Visions more, but even if Scour is a less powerful effect, the fact it's a one mana instant speed spell means you usually don't have to sacrifice tempo for casting the spell. I like Scour especially in the MUs where I'm trying to find Izzet Staticaster. Scour definitely helps with that process. I also think it's good to have a card to flash back EOT that's always alive.
If I had to pilot the list and would get to change two cards from the maindeck, I'd cut both Damnations and maybe add one Tasigur and one Terminate/Push.
Edit: It's also worth mentioning how well Scour works with and against Jace. You can scour away bad cards after a +0, or mill yourself if the opponen tries to fateseal you.
Notably, his list is also dropping tasigur's and moving up the curve but he's going all out with the full playset of Jace as well as the playset of cryptics. Having all 4 jace's feels like overkill to me but he's an infinitely better player than I am so maybe it's correct.
Edit: important to mention he's also playing 3 copies now of search and down to 2 scours.
Also of note he mentions at the very end how he wants to fit shoal into the deck but hasn't found a way just yet. It'll be interesting to see how his list develops.
I can cheer for Corey's success but I've never liked the lists he plays. Just a fair week ago he said Thought Scour is an essential card for the strategy, but now he's cutting down on those. As for cutting Tasigur, he experimented with that before the PT as well, but ended up putting them back in. It's hard to say what Jace will end up doing for the strategy, but I'm pretty sure you can't get away in this format with 4 Cryptics and 4 Jaces in the same deck.
I can cheer for Corey's success but I've never liked the lists he plays. Just a fair week ago he said Thought Scour is an essential card for the strategy, but now he's cutting down on those. As for cutting Tasigur, he experimented with that before the PT as well, but ended up putting them back in. It's hard to say what Jace will end up doing for the strategy, but I'm pretty sure you can't get away in this format with 4 Cryptics and 4 Jaces in the same deck.
This is quite an unfair assessment of Corey's words.
He clearly stated in the article that Thoughtscour is key for a deck having 12 cards that synergize with the GY. In the updated Jace list he posted, those cards have been reduced significantly (he even went down to 3 K. Command). With less gy synergy, you don't need as many TS.
As for Tasigur, with Jace being introduced as a new win condition you don't really need the Tasigurs. Yes, some times they will land on T2 to block the way of aggro decks but that's not a high % of the time and can be exploited by the opponent easily.
Corey's final lists (that is, the ones he actually plays in GPs/PTs) are always fine tuned and well thought out. That being said, the Jace list he posted is clearly a draft and should only be seen as a starting point and not a guide to follow. I do agree that 4 crytpics/4 Jaces might be a bit too much, and I would be quicker to cut the jaces than the cryptics.
I can cheer for Corey's success but I've never liked the lists he plays. Just a fair week ago he said Thought Scour is an essential card for the strategy, but now he's cutting down on those. As for cutting Tasigur, he experimented with that before the PT as well, but ended up putting them back in. It's hard to say what Jace will end up doing for the strategy, but I'm pretty sure you can't get away in this format with 4 Cryptics and 4 Jaces in the same deck.
So what split are you proposing for Cryptics Commands and Jace's?
I can cheer for Corey's success but I've never liked the lists he plays. Just a fair week ago he said Thought Scour is an essential card for the strategy, but now he's cutting down on those. As for cutting Tasigur, he experimented with that before the PT as well, but ended up putting them back in. It's hard to say what Jace will end up doing for the strategy, but I'm pretty sure you can't get away in this format with 4 Cryptics and 4 Jaces in the same deck.
So what split are you proposing for Cryptics Commands and Jace's?
Well, it depends on the number of cantrips you play. maybe 4/2 or 3/3 for a list with just 2 Scours. I've thought about 2/1 and 2/2 splits for myself with full 8 cantrips. I'd be more interested in playing cards that attack or protect Jace, like Clique, or counters that hit Jace on the draw.
I can cheer for Corey's success but I've never liked the lists he plays. Just a fair week ago he said Thought Scour is an essential card for the strategy, but now he's cutting down on those. As for cutting Tasigur, he experimented with that before the PT as well, but ended up putting them back in. It's hard to say what Jace will end up doing for the strategy, but I'm pretty sure you can't get away in this format with 4 Cryptics and 4 Jaces in the same deck.
This is quite an unfair assessment of Corey's words.
He clearly stated in the article that Thoughtscour is key for a deck having 12 cards that synergize with the GY. In the updated Jace list he posted, those cards have been reduced significantly (he even went down to 3 K. Command). With less gy synergy, you don't need as many TS.
As for Tasigur, with Jace being introduced as a new win condition you don't really need the Tasigurs. Yes, some times they will land on T2 to block the way of aggro decks but that's not a high % of the time and can be exploited by the opponent easily.
Corey's final lists (that is, the ones he actually plays in GPs/PTs) are always fine tuned and well thought out. That being said, the Jace list he posted is clearly a draft and should only be seen as a starting point and not a guide to follow. I do agree that 4 crytpics/4 Jaces might be a bit too much, and I would be quicker to cut the jaces than the cryptics.
I didn't mean to imply that his lists seemed illogical to me, it's just that their logic doesn't appeal to me.
After looking at Corey's list and my discussions here and elsewhere I've made some changes to my list. Really excited to test it next week.
Also I agree with others that 4 Jace seems very excessive and I highly doubt that will be the final number Corey settles on. The other thing I disagree with is serum visions but that may just be an attachment to the card on my part as I've had it pull it's weight in avoiding mana flood or screw. Going down to basically no library manipulation at all is a bit too high variance for me. Not to mention I'm also on ancestral whereas he is on search still so that may contribute to his decision
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I was quite confident with my list until the PT, but now I'm trying to find a way to play Fields without sacrificing Serum Visions.
AV vs Search is another point of interest for me. Search is the more powerful card, but AV is not vulnerable against land destruction, which is a huge bonus. I'm currently playing 2-1 split with a second Search in the SB, but I'm likely going to play more with these numbers
Youtube Channel
What do you think of my grixis deck? Tried to keep the cute stuff out and keep it as lean as possible. Feel like nihil spellbomb somewhere in the SB might be nice, but not sure what to cut. Maybe the surgicals? Will be playing this on MTGO
4 Snapcaster Mage
2 Tasigur, the Golden Fang
1 Gurmag Angler
Instants / Sorceries
4 Serum Visions
4 Thought Scour
3 Fatal Push
4 Lightning Bolt
2 Terminate
2 Logic Knot
1 Countersquall
1 Spell Snare
4 Kolaghan's Command
4 Cryptic Command
Enchantments
2 Search for Azcanta
Lands
1 Blood Crypt
2 Creeping Tar Pit
3 Island
1 Misty Rainforest
1 Mountain
4 Polluted Delta
4 Scalding Tarn
2 Steam Vents
1 Sulfur Falls
1 Swamp
2 Watery Grave
2 Ceremonious Rejection
2 Surgical Extraction
2 Collective Brutality
2 Dispel
2 Disdainful Stroke
2 Fulminator Mage
1 Anger of the Gods
1 Damnation
EDIT: swapped out a clique for another angler
I follow the Burkhart style deck. I think the most impactful suggestion I have is that Field of Ruin is the Truth, and you should try to fit at least 2 in main deck. I cut 2 Serum Visions to fit it, which I have not missed much, as it simplifies mulligaining decisions and allows me to play more reactively. Field is useful in a lot of match ups that have value lands, and takes of stress from the sideboard for land hate (I currently run 2 Fulminators but am considering going down to 1 since I rarely side it in). For the sideboard, I like having the second Anger to clear boards against Humans, Affinity, and Dredge.
Other than that, are builds are pretty close (-1 Vendi Clique; -1 Logic Knot; -2 Serum Visions; [-1 Disdainful Strike]; +1 Spell Snare; +1 Damnation; +2 Field of Ruin; [+1 Anger of the Gods]).
* Grixis Control A!
* Grixis Control B!
GURB Grixis/Jund Shadow
RBG Dredge
xUx U Ballista Tron
Commander
GUR Maelstrom Wanderer
BWU Sydri, Galvanic Genius
BGB Meren of Clan Nel Toth
WGW Nazahn, Revered Bladesmith
RRR Feldon of the Third Path
WWW Heliod, God of the Sun
RBUGrixis ControlUBR
GUSimic MerfolkUG
WUUW ControlUW
RBUGrixis ControlUBR
BUUB MillUB
Colorless Eldrazi Tron
WRBurnRW
GUSimic MerfolkUG
UMono U TurnsU
WGGenesis Wave EnchantressGW
Currently I've moved away from Search and back to a full playset of AV and am much happier.
Correct me if you think I'm mistaken here, but Jace pairs the best with discard. As there is no FoW in the format, the only way to guarantee that you nor your Jace will die the turn after you slam it is to pave the way with discard spells. Then once Jace lands, you can use the +0 ability to mitigate the biggest downside those discard spells have, which is being potentially useless in the later game.
I'm not sure whether I'm going to experiment with Jace, but I sure as hell will be prepared to face the card. I have ran just one Creeping Tar Pit for the longest time, but this unbanning definitely has prompted me to up that number. I am also probably going to continue using some additional threats like Young Pyromancer or Vendilion Clique that are not weak to Jace's -1 ability. I will also definitely continue to advocate AV as the primary card advantage spell. Discard spells see more play than ever before and I'm expecting the trend to continue with this unbanning, and AV is the best trump to those strategies.
My guess is Jace will end up being a 1-2-of somewhere in the 75, unless someone can break the formula by finding the shell that can cast Jace and have it not die immediately.
Youtube Channel
http://tappedout.net/mtg-decks/09-02-18-grixis-control/
Couple notable things:
Moved away from the scour and tasigur gameplan in favour of more of a grindy approach.
Also as others have mentioned above, I'm back on ancestral myself over search. Ancestral seems much better situated in the current format as it's harder to interact with especially against the 2 biggest decks that will be experimented with after the banning, control and midrange (jund):
Control can always snare it on the way down even on the draw so it's harder to get it to stick. Especially against UW control they play 8+ land destruction effects in the main so flipping search is usually more of a liability than anything else.
Jund can discard either search or ancestral but at least on the play you can suspend it before they start ripping apart your hand. Jund also has decay and pulse to hit the enchantment and post board are bringing in fulminators for sure to blow up the land half.
There's also mass grave hate to worry about post board and ancestral is easier on the mana too. Search certainly has its upsides but I think those upsides aren't as good in the coming meta. I think ancestral is going to be the stronger card going forward and with Jace to shuffle away extra copies in the late game it seems even better.
I'm only running 2 Jace as I think you definitely don't want to go overboard on him and auto lose versus aggro or combo decks. 2 should be sufficient and I'll bump it up to 3 if it becomes necessary.
I think that a Mainboard-Sideboard Jace split will be the norm. Maybe 2-1 or 3-1 (though 2-1 i find more likely). When he is good, he is fantastic, and you'll definitely want 3-4, but when he is bad, he is atrocious. Hedging your bets by giving you the potential of 3-4 Jaces post board, without going all-in on it game 1 might be a plan.
Yeah I could realistically see this as being the case. Gonna test 2 for now and see how that works out. Can't wait til Monday to start jamming games at my store.
My buddy is also going jund now (was playing abzan/rock for a while) so we're gonna playtest a bunch. Should be great
I agree with your points on Ancestral, but not on cutting Thought Scours and Tasigurs. How is cutting those two cards making the deck any grindier than it was before? Tasigur certainly lets you grind, and Scour gives you more card selection. You're only making the deck more focused on beating fair creature decks and giving up %-points against combo, ramp/big mana, control and burn.
with 3 Cryptics, 2 Jaces and 2 Damnations your curve is looking atrocious. Some of those cards need to be moved to the SB or cut entirely. Of course we're all looking to experiment with Jace, but basic deck building rules suggest this one isn't going to fly.
Youtube Channel
Tasigur has been very underwhelming as of late due to being consistently outsized by other creatures or getting easily answered by opposing control or midrange decks. Maybe it's just my experience but he only helps out against big mana and combo decks where I need to get a clock going. I suppose he's non negligible against burn but that matchup is horrendous either way. The clique is a pseudo replacement for him with the advantage of being evasive, having flash and either disrupting their hand or improving my own but the downside of being one power less.
Scour has always seemed like a necessary evil for me and I'd love to be able to play the deck without it. It's certainly not card selection as the mill is completely random, you may or may not mill anything useful (lands, Jace, ancestral). It does provide extra fuel for snaps, kommands and delve which is why it's good but on the other hand it does absolutely nothing to prevent yourself from mana flood or screw for example. With this decklist the choice for me was between scour and serum and I think serum is better for the direction of the deck towards being grindier as serum sets up your draws but scour allows you to accelerate on mana. That's what I meant by grinding, less focus on trying to cheat out a delve creature or flip a search early and more on setting up future draw steps.
I can see how cutting that package does make me slightly worse against big mana and combo (hence the sideboard skewed towards those) but I fail to see how it makes me worse against control. Tasigur was always the worst card in my deck against control, I usually win those games with either bolt snap bolt or out attritioning them with snap and kommand.
As for the curve, I agree that the 2 damnation may be overkill you're right. The idea was being able to sweep the board entirely and then next turn drop a Jace but perhaps that's unnecessary. The overall curve is slightly higher but there's an increased land count to accomodate that. UW and jeskai control often run a very similar if not identical split along their curve (if not going even heavier on sweepers) and that's what I was going off of. The curve being lower makes sense when the gameplan is casting multiple spells early to get ahead but less so when the gameplan is to strap in for the long game and out value your opponents.
If I remove the damnations I will likely replace them with some combination of additional removal, the 2nd clique from the board, or another land and go up a sweeper in the board (either anger or damnation).
I definitely like Vendilion Clique, especially if we're interested in setting up Tasigur, but the omnipresence on Lingering Souls makes me afraid on relying on Clique too much.
I also like Serum Visions more, but even if Scour is a less powerful effect, the fact it's a one mana instant speed spell means you usually don't have to sacrifice tempo for casting the spell. I like Scour especially in the MUs where I'm trying to find Izzet Staticaster. Scour definitely helps with that process. I also think it's good to have a card to flash back EOT that's always alive.
If I had to pilot the list and would get to change two cards from the maindeck, I'd cut both Damnations and maybe add one Tasigur and one Terminate/Push.
Edit: It's also worth mentioning how well Scour works with and against Jace. You can scour away bad cards after a +0, or mill yourself if the opponen tries to fateseal you.
Youtube Channel
On a related note, Corey put out his article post pro tour and included a rough draft of his version of grixis with Jace:
https://www.channelfireball.com/articles/grixis-control-at-pro-tour-rivals-13th-updated-with-jace/
Notably, his list is also dropping tasigur's and moving up the curve but he's going all out with the full playset of Jace as well as the playset of cryptics. Having all 4 jace's feels like overkill to me but he's an infinitely better player than I am so maybe it's correct.
Edit: important to mention he's also playing 3 copies now of search and down to 2 scours.
Also of note he mentions at the very end how he wants to fit shoal into the deck but hasn't found a way just yet. It'll be interesting to see how his list develops.
Youtube Channel
He clearly stated in the article that Thoughtscour is key for a deck having 12 cards that synergize with the GY. In the updated Jace list he posted, those cards have been reduced significantly (he even went down to 3 K. Command). With less gy synergy, you don't need as many TS.
As for Tasigur, with Jace being introduced as a new win condition you don't really need the Tasigurs. Yes, some times they will land on T2 to block the way of aggro decks but that's not a high % of the time and can be exploited by the opponent easily.
Corey's final lists (that is, the ones he actually plays in GPs/PTs) are always fine tuned and well thought out. That being said, the Jace list he posted is clearly a draft and should only be seen as a starting point and not a guide to follow. I do agree that 4 crytpics/4 Jaces might be a bit too much, and I would be quicker to cut the jaces than the cryptics.
UB Faeries (15-6-0)
UWR Control (10-5-1)/Kiki Control/Midrange/Harbinger
UBR Cruel Control (6-4-0)/Grixis Control/Delver/Blue Jund
UWB Control/Mentor
UW Miracles/Control (currently active, 14-2-0)
BW Eldrazi & Taxes
RW Burn (9-1-0)
I do (academic) research on video games and archaeology! You can check out my open access book here: https://www.sidestone.com/books/the-interactive-past
So what split are you proposing for Cryptics Commands and Jace's?
Well, it depends on the number of cantrips you play. maybe 4/2 or 3/3 for a list with just 2 Scours. I've thought about 2/1 and 2/2 splits for myself with full 8 cantrips. I'd be more interested in playing cards that attack or protect Jace, like Clique, or counters that hit Jace on the draw.
I didn't mean to imply that his lists seemed illogical to me, it's just that their logic doesn't appeal to me.
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Also I agree with others that 4 Jace seems very excessive and I highly doubt that will be the final number Corey settles on. The other thing I disagree with is serum visions but that may just be an attachment to the card on my part as I've had it pull it's weight in avoiding mana flood or screw. Going down to basically no library manipulation at all is a bit too high variance for me. Not to mention I'm also on ancestral whereas he is on search still so that may contribute to his decision