We lose Psychic Possession, so I'm not sure how much we can get with the start before combat.
I think as soon as the opponent has an Entangling Trap trigger we can Bolt Bend it to change targets between copies of Warden of the Woods, triggering them for each Bolt Bend and going infinite.
EDIT: @hyp_cos:
As it turns out the only working implementation of the waterfall model that we have requires 3 creature types per clock, instead of the 2 we were initially hoping for.
See post #4018 and post #4362
While we can make some use of draw triggers of the first 19 creature types as you describe, we can't go through the full combo with them. Before allowing enough creature types to die in computation those can't implement the busy-beaver champion. Or more specifically, we don't know that they can implement a universal turing machine, so we can't prove that whatever champion they would implement grows like a busy beaver function.
When we can't go through the full combo with the draw triggers from the death, then the growth we achieve from that death effectively disappears from the final estimate. We still use that trick to draw more as soon as we can, but it only gets to full power after freeing up 19 creature types to die in the computation, so everything before that kinda disappears in the lower bounds we can give.
Right - it's possible that we can get Busy Beaver using, say, 10 creature types, so that our actualy damage would be BB_{...}(255*53), but we just don't know that. So we're just describing the best lower bound that we can give.
I don't understand how the Gale, Waterdeep Prodigy layers are supposed to work. Casting some sorcery from hand wouldn't help us casting Nexus of Fate and if it would, than that cast wouldn't be from hand. And including the Nexus at all seems pointless, as we have plenty of other instants we can draw with Pain Seer instead.
Oh, I guess that doesn't work. (The idea is that we can cast an instant from the graveyard, that shuffles itself into our library, so we can draw it and cast it from our hand. But, we need to draw it.)
Getting rid of Orb of the Dragonkind frees up some stages. This has the potential for 4 stages, but it looks like we don't quite have enough card slots; we may need to drop the blue mana stage.
Edit: We also need to get the blue mana stage to produce hasted creature tokens, so that's more cards. So yeah, probably have to drop to 3 additional stages, unless we find an improvement.
Ah, right. It would definitely be easier if we could have Stalking Assassin as the primary stage creature, so we could just have Stern Proctor. But, I don't know how to differentiate stage creatures other than with Battle Cry.
Looks like we have enough space now for 4 additional stages; the problem is that I would want to go red creature -> white creature -> black creature, and I don't know how to use a red creature to gain life, other than with Thunderscape Mage, which can have a toughness of 2.
Perhaps I just need to look for more connections between different colors.
I don't see how stuff is supposed to get tapped for Stalking Assassin, but once we have blue mana it can tap an animated Goblin Boom Keg and then destroy it to start an illegal computation.
Getting hasty copies of Errant Doomsayers seems to be as hard as getting hasty Stalking Assassins. Harder actually, since we can't get them from Obscura Charm. Does the stage work out with that?
Hmm, that might be difficult. But, Sunstrike Legionnaire seems much easier. Obscura Charm can destroy the Legionnaire to get a hasted copy, and we can just keep reusing that hasted copy as more creatures come in. So I think that works?
Also, Sunscape Legionnaire can't target Thunderscape Master, so we can put the rec creature stage back in. So, how about:
In a Cowardiced deck, how to get 2 haste Repentant Vampire tokens from this stack, if assumed that one PB trigger plus one BM trigger below it can regain one haste token:
top
Repentant Vampire-PB trigger
Repentant Vampire-BM trigger
Repentant Vampire-PB trigger
Repentant Vampire-BM trigger
other abilities
Use Kaervek's Spite to kill - that is not good because Mimic Vat is also killed and doesn't remember anything. If we Flash a Repentant Vampire after bounce, then the token cannot be kept over Kaervek's Spite, because we cannot Wrong Turn it.
One solution to make 1 haste token is: use PB trigger to bounce Repentant Vampire, then activate a Mimic Vat. Spend R to trigger Spellweaver Volutes: Flash the Repentant Vampire, imprint on that Mimic Vat, so the Vat now remember the Repentant Vampire; after that we can use Kaervek's Spite to regain R. Next the activated ability of Mimic Vat resolve, give a token. Then BM trigger fetch the card.
However, this method doesn't work if we want 2 haste tokens. If we want a 2nd haste token, the 1st haste token will die on Kaervek's Spite.
So the PB triggers can be used to bounce whatever; the original ability is used to destroy the nontoken Repentant Vampire. In cases where the nontoken Repentant Vampire changes zones before the ability is resolved, just prior to resolving the ability we use a PB trigger to bounce Cowardice, and the next one to retarget the original ability to the nontoken Repentant Vampire again.
That destroys the nontoken Vampire, which we can imprint on Mimic Vat to get a hasted token. We can then move the Vampire card back to the graveyard, where a BM trigger can bring it back onto the battlefield.
If there are still BM triggers remaining from the second layer, we activated the newly hasted created token, getting the ability on the stack with PB triggers above it, and we repeat the process.
When we use the last BM trigger from the second layer, we dip into the PB triggers from the third layer to bounce the nontoken Vampire, and replay it to get a bounch of new BM triggers, then activate the hasted token again to recreate the top layer.
When we get down to one PB trigger in the third layer, we make sure to bounce Cowardice prior to resolving it, then use that last PB trigger to retarget the original ability just below it to target the nontoken Vampire. Then we resolve the original ability, destroying the Vampire, and allowing us to create a second hasted token.
We can't use Leyline of Anticipation because Academy Rector could put it into play when it dies from us casting a Kaervek's Spite. That would make it easy to interrupt an otherwise infinite computation at any time.
I don't recall any problems with Mirrormade, so maybe that could help to get some easier lines. But everything works with Copy Enchantment, so it wasn't really necessary.
EDIT: How is the deck without Cowardice supposed to benefit from computations? The only possibility in there is Precursor Golem, copying some spell for a large number of vanilla golem tokens under the opponents control. But none of the spells in there benefit from a large batch of copies entering the stack at once. Not even Obscura Charm with a hypothetical Grip of Chaos to redirect it away from golems would work, as only one of them can get a useful target.
We'd need on demand target changes to be very cheap, or an entirely different plan to benefit.
Edit: Oh, but we would have to figure out something that Worldfire does that Kaervek's Spite doesn't... unless we switch out Kaervek's Spite for an alternative, like Desolation Giant.
1. Precursor Golem seems necessary to extract the computation result. But on Repeated Reverberation, is it better or worse than Thousand-Year Storm as the number keeper (we cannot give TYS to opponent, because such TYS won't function)?
3. About Floating-Dream Zubera. We need to kill FDZ under opponent's control. This seems to be done when the computation deal too much damage on FDZ. However, at the start of computation, all Psychic Possession are gone, so we cannot draw.
...or, resolve the tap-ability of Repentant Vampire on FDZ?
4. Some ruling question. What is the timestamp of Threshold (Repentant Vampire)? The timestamp of the permanent? Or the timestamp of the last time card amount in graveyard changed? Or the timestamp of the last time the threshold turned on/off?
1. The difference between Repeated Reverberation and Thousand-Year Storm is what I like to refer to as "incidental"; it's not enough to affect things on the order of a layer or more, or the number of applications of the final layer. Generally in such instances, the choice boils down to which version of the deck gets ahead in the early goings. In this case, it appears that Repeated Reverberation gets ahead at the start, since it goes more nicely with Caress of Phyexia.
2. We donate the Voracious Greatshark to the opponent, and then bounce it after the computation is done.
Oh, you mean with Flash? Hmmm, that looks troublesome, if we can get hasted tokens for both Repentant Vampire and Firebrand Ranger each time we do the transition.
We can get rid of Flash, using the slightly more cumbersome Replenish start. But, if we need Flash to generate a hated Firebrand Ranger, we may be in trouble.
It shouldn't go infinite. If we use Flash to create a hasty token of Repentant Vampire, then the original card ends up in exile/graveyard/library. To get it out of there we need a Bloodbond March trigger. There is no way to get those on the stack while the Repentant Vampire is in library/exile/graveyard, nor can we insert them between the Flash end the Kaervek's Spite cast of the transition, as both are triggered from flashing back Bump in the Night.
So the Bloodbond March trigger already has to be on the stack below the transition. And in any loop we need to refresh it, which requires bouncing the Repentant Vampire with a Psychic Battle trigger from the lower stage.
Currently, it is Flash along with some creature targeting abilities making haste Firebrand Ranger. But in any way, if we want haste Firebrand Ranger, we will also make haste Repentant Vampire in similar way.
EDIT: With a Mimic Vat token on battlefield, activate it without resolve. Then we play things, build abilities on the stack, and start a hyperstage transition. Use Flash to imprint Repentant Vampire on the Mimic Vat. Next, Kaervek's Spite will clean all the Mimic Vat, but for LKI the Mimic Vat will still remember the Repentant Vampire card. When after we finish things, resolve the activate ability of the Vat, and have a haste token.
And another question: why the mill-card (Tomb Robber) is so complicated (we need to discard a card), other than a simple mill-card like Shriekhorn? What is the consideration that we must discard to mill?
Yes, we create hasty Firebrand Ranger tokens with Flash, but it requires a transition and Psychic Battle triggers from below the transition to do that. We could create hasty Repentant Vampire tokens the same way, but it still costs triggers from below the transition. And that cost means it is fine, since we can't sneak the created tokens past the Kaervek's Spite cast into the lower stage.
We use Tomb Robber because we must not allow the opponent to get cards into their graveyard. If they can reach threshold they can activate a donated hasty Repentant Vampire token during a computation which can interrupt an infinite loop at an arbitrary point. That can't be allowed. Tomb Robber costs mana to activate, so the opponent can't use it (and if they could the would put their basic land into their hand). Unlike many mill cards it also doesn't target a player, so we can't use it on the opponent ourself. It also pulls double duty by getting Archaeological Dig from our library into our hand for the additional stage.
EDIT: Oh, using a Mimic Vat activation on the stack to profit from the Kaervek's Spite death might go infinite. I always though that death couldn't be useful since all the Mimic Vats are removed at the same time. But if the activation is already on the stack that changes things.
If Mimic Vat used "last known information" that line wouldn't be a problem, since it didn't have the Repentant Vampire exiled when it was last on the battlefield. But it doesn't and to my understanding the ability actually just looks for exiled cards with the property that they were exiled by the Mimic Vat that is the source of the ability. So in this case it would create a hasty Vampire and cause problems for us.
So I think that is actually an infinite that breaks the deck. Well spotted! Fixing it could be hard, my only on the spot idea would be going back to some bounce-based transition spell. But that would take a major rework of the deck. I guess we are looking at doing that anyway with the attempt to cut Cowardice
So, if I understand it correctly... both "group of Repentant Vampire-BM triggers" and "group of Firebrand Ranger-BM triggers" must each consumes a Repentant Vampire-PB trigger from below?
We consume few Repentant Vampire-PB triggers each time of transition, but then we can build MANY Repentant Vampire-PB triggers.
Private Mod Note
():
Rollback Post to RevisionRollBack
To post a comment, please login or register a new account.
I think as soon as the opponent has an Entangling Trap trigger we can Bolt Bend it to change targets between copies of Warden of the Woods, triggering them for each Bolt Bend and going infinite.
EDIT: @hyp_cos:
As it turns out the only working implementation of the waterfall model that we have requires 3 creature types per clock, instead of the 2 we were initially hoping for.
See post #4018 and post #4362
While we can make some use of draw triggers of the first 19 creature types as you describe, we can't go through the full combo with them. Before allowing enough creature types to die in computation those can't implement the busy-beaver champion. Or more specifically, we don't know that they can implement a universal turing machine, so we can't prove that whatever champion they would implement grows like a busy beaver function.
When we can't go through the full combo with the draw triggers from the death, then the growth we achieve from that death effectively disappears from the final estimate. We still use that trick to draw more as soon as we can, but it only gets to full power after freeing up 19 creature types to die in the computation, so everything before that kinda disappears in the lower bounds we can give.
Second try with Gale, Waterdeep Prodigy:
1 Smoke Spirits' Aid - 2
2 Nexus of Fate - 3
* sorcery - 4
3 Pain Seer - 5
4 Tolarian Kraken - 6
5 Psychic Possession - 7
6 [c]Floating-Dream Zubera - 9
7 Harmonic Prodigy
8 Bolt Bend
9 Gale, Waterdeep Prodigy
10 Xorn
So back to BB_{w^3 + w + 9}(12,985)
Edit: Another attempt at the non-Cowardice deck:
1 Coat of Arms
2 Xathrid Necromancer
3 Artificial Evolution
4 Arcbond
5 Comeuppance
6 Dralnu's Crusade
Starting a Computation
7 Opalescence
8 Wrong Turn
9 Kaervek's Spite
10 Goblin Boom Keg
11 March of the Machines
Utility: Enchantments/Artifacts
12 Vedalken Orrery
13 Dual Nature
14 Copy Enchantment
15 Mox Jet
16 Mox Ruby
Utility: Spells
17 Repeated Reverberation
18 Precursor Golem
Utility: Creatures
19 Bloodbond March
20 Cephalid Shrine
21 Possessed Nomad
22 Together Forever
23 Devout Witness
24 Illusionist's Bracers
25 Sigarda's Aid
26 Mimic Vat
27 Mirror of Fate
28 Tomb Robber
Volute Hyperstage
29 Spellweaver Volute
30 Battle Cry
31 Argivian Find
32 Bump in the Night
33 Forest
34 Nature's Lore
35 Izzet Guildmage
Helix Megastage
36 Spellweaver Helix
37 Worldpurge
38 Stone Rain
39 Acorn Harvest
40 Acorn Harvest
41 Glimmerpost
42 Radiant Fountain
43 Panharmonicon
44 Loam Dweller
45 Wellwisher
46 Stalking Assassin
47 Errant Doomsayers
Blue Creature Stage
48 Possessed Aven
Black Creature Stage
49 Repentant Vampire
Blue Mana Stage
50 Archaeological Dig
51 Captain of the Mists
52 Viral Drake
53 Boseiju Reaches Skyward
Start
54 Mox Pearl
55 Mana Crypt
56 Shriekhorn
57 Replenish
58 Omniscience
59 Garruk, Primal Hunter
Getting rid of Orb of the Dragonkind frees up some stages. This has the potential for 4 stages, but it looks like we don't quite have enough card slots; we may need to drop the blue mana stage.
Edit: We also need to get the blue mana stage to produce hasted creature tokens, so that's more cards. So yeah, probably have to drop to 3 additional stages, unless we find an improvement.
Edit: Okay, maybe Obscura Charm will work for Stalking Assassin. So, how about:
1 Coat of Arms
2 Xathrid Necromancer
3 Artificial Evolution
4 Arcbond
5 Comeuppance
6 Dralnu's Crusade
Starting a Computation
7 Opalescence
8 Wrong Turn
9 Kaervek's Spite
10 Goblin Boom Keg
11 March of the Machines
Utility: Enchantments/Artifacts
12 Vedalken Orrery
13 Dual Nature
14 Copy Enchantment
15 Mox Jet
Utility: Spells
16 Repeated Reverberation
17 Precursor Golem
Utility: Creatures
18 Bloodbond March
19 Cephalid Shrine
20 Stalking Assassin
21 Together Forever
22 Stern Proctor
23 Illusionist's Bracers
24 Sigarda's Aid
25 Mimic Vat
26 Mirror of Fate
27 Tomb Robber
Volute Hyperstage
28 Spellweaver Volute
29 Obscura Charm
30 Argivian Find
31 Bump in the Night
32 Forest
33 Wood Elves
Helix Megastage
34 Spellweaver Helix
35 Worldpurge
36 Stone Rain
37 Acorn Harvest
38 Acorn Harvest
39 Glimmerpost
40 Radiant Fountain
41 Panharmonicon
42 Loam Dweller
43 Ezzaroot Channeler
44 Possessed Centaur
Black Creature Stage
45 Repentant Vampire
Blue Mana Stage
46 Archaeological Dig
47 Captain of the Mists
48 Viral Drake
49 Boseiju Reaches Skyward
Start
50 Mox Pearl
51 Mana Crypt
52 Shriekhorn
53 Replenish
54 Omniscience
55 Garruk, Primal Hunter
Looks like we have enough space now for 4 additional stages; the problem is that I would want to go red creature -> white creature -> black creature, and I don't know how to use a red creature to gain life, other than with Thunderscape Mage, which can have a toughness of 2.
Perhaps I just need to look for more connections between different colors.
Oh, I forgot to add Errant Doomsayers, so we can tap and then destroy/bounce creatures of toughness 2 or less.
Edit:
1 Coat of Arms
2 Xathrid Necromancer
3 Artificial Evolution
4 Arcbond
5 Comeuppance
6 Dralnu's Crusade
Starting a Computation
7 Opalescence
8 Wrong Turn
9 Kaervek's Spite
10 Goblin Boom Keg
11 March of the Machines
Utility: Enchantments/Artifacts
12 Vedalken Orrery
13 Dual Nature
14 Copy Enchantment
15 Mox Jet
Utility: Spells
16 Repeated Reverberation
17 Precursor Golem
18 Bloodbond March
19 Cephalid Shrine
Vat Stage
20 Stalking Assassin
21 Errant Doomsayers
22 Together Forever
23 Stern Proctor
24 Illusionist's Bracers
25 Sigarda's Aid
26 Mimic Vat
27 Mirror of Fate
28 Tomb Robber
Volute Hyperstage
29 Spellweaver Volute
30 Obscura Charm
31 Argivian Find
32 Bump in the Night
33 Forest
34 Wood Elves
35 Spellweaver Helix
36 Worldpurge
37 Stone Rain
38 Acorn Harvest
39 Acorn Harvest
40 Glimmerpost
41 Radiant Fountain
42 Panharmonicon
43 Loam Dweller
Green Creature Stage
44 Ezzaroot Channeler
45 Possessed Centaur
Black Creature Stage
46 Repentant Vampire
Start
47 Mox Pearl
48 Mana Crypt
49 Shriekhorn
50 Replenish
51 Omniscience
52 Garruk, Primal Hunter
Also, Sunscape Legionnaire can't target Thunderscape Master, so we can put the rec creature stage back in. So, how about:
1 Coat of Arms
2 Xathrid Necromancer
3 Artificial Evolution
4 Arcbond
5 Comeuppance
6 Dralnu's Crusade
Starting a Computation
7 Opalescence
8 Wrong Turn
9 Kaervek's Spite
10 Goblin Boom Keg
11 March of the Machines
Utility: Enchantments/Artifacts
12 Vedalken Orrery
13 Dual Nature
14 Copy Enchantment
15 Mox Jet
Utility: Spells
16 Repeated Reverberation
17 Precursor Golem
Utility: Creatures
18 Bloodbond March
19 Cephalid Shrine
20 Stalking Assassin
21 Sunstrike Legionnaire
22 Together Forever
23 Stern Proctor
24 Illusionist's Bracers
25 Sigarda's Aid
26 Mimic Vat
27 Mirror of Fate
28 Tomb Robber
Volute Hyperstage
29 Spellweaver Volute
30 Obscura Charm
31 Argivian Find
32 Bump in the Night
33 Forest
34 Wood Elves
Helix Megastage
35 Spellweaver Helix
36 Worldpurge
37 Stone Rain
38 Acorn Harvest
39 Acorn Harvest
40 Glimmerpost
41 Radiant Fountain
42 Panharmonicon
43 Loam Dweller
44 Thunderscape Master
45 Possessed Barbarian
White Creature Stage
46 Southern Paladin
47 Possessed Nomad
Black Creature Stage
48 Repentant Vampire
Start
49 Mox Pearl
50 Mana Crypt
51 Shriekhorn
52 Replenish
53 Omniscience
54 Garruk, Primal Hunter
One solution to make 1 haste token is: use PB trigger to bounce Repentant Vampire, then activate a Mimic Vat. Spend R to trigger Spellweaver Volutes: Flash the Repentant Vampire, imprint on that Mimic Vat, so the Vat now remember the Repentant Vampire; after that we can use Kaervek's Spite to regain R. Next the activated ability of Mimic Vat resolve, give a token. Then BM trigger fetch the card.
However, this method doesn't work if we want 2 haste tokens. If we want a 2nd haste token, the 1st haste token will die on Kaervek's Spite.
top
RV-PB triggers
RV ability
RV-BM triggers
RV-PB triggers
RV ability
RV-BM triggers
So the PB triggers can be used to bounce whatever; the original ability is used to destroy the nontoken Repentant Vampire. In cases where the nontoken Repentant Vampire changes zones before the ability is resolved, just prior to resolving the ability we use a PB trigger to bounce Cowardice, and the next one to retarget the original ability to the nontoken Repentant Vampire again.
That destroys the nontoken Vampire, which we can imprint on Mimic Vat to get a hasted token. We can then move the Vampire card back to the graveyard, where a BM trigger can bring it back onto the battlefield.
If there are still BM triggers remaining from the second layer, we activated the newly hasted created token, getting the ability on the stack with PB triggers above it, and we repeat the process.
When we use the last BM trigger from the second layer, we dip into the PB triggers from the third layer to bounce the nontoken Vampire, and replay it to get a bounch of new BM triggers, then activate the hasted token again to recreate the top layer.
When we get down to one PB trigger in the third layer, we make sure to bounce Cowardice prior to resolving it, then use that last PB trigger to retarget the original ability just below it to target the nontoken Vampire. Then we resolve the original ability, destroying the Vampire, and allowing us to create a second hasted token.
And so on and so forth.
If we further replace Vedalken Orrery by Leyline of Anticipation, can we delete March of the Machines?
Iijil?
Edit: The problem with getting rid of March of the Machines is how to send artifacts over to the opponent, in particular Coat of Arms.
I don't recall any problems with Mirrormade, so maybe that could help to get some easier lines. But everything works with Copy Enchantment, so it wasn't really necessary.
EDIT: How is the deck without Cowardice supposed to benefit from computations? The only possibility in there is Precursor Golem, copying some spell for a large number of vanilla golem tokens under the opponents control. But none of the spells in there benefit from a large batch of copies entering the stack at once. Not even Obscura Charm with a hypothetical Grip of Chaos to redirect it away from golems would work, as only one of them can get a useful target.
We'd need on demand target changes to be very cheap, or an entirely different plan to benefit.
Edit: Oh, but we would have to figure out something that Worldfire does that Kaervek's Spite doesn't... unless we switch out Kaervek's Spite for an alternative, like Desolation Giant.
1. Precursor Golem seems necessary to extract the computation result. But on Repeated Reverberation, is it better or worse than Thousand-Year Storm as the number keeper (we cannot give TYS to opponent, because such TYS won't function)?
2. How to get BM triggers of Voracious Greatshark? If no way, how to fetch it after Kaervek's Spite sweeper?
3. About Floating-Dream Zubera. We need to kill FDZ under opponent's control. This seems to be done when the computation deal too much damage on FDZ. However, at the start of computation, all Psychic Possession are gone, so we cannot draw.
...or, resolve the tap-ability of Repentant Vampire on FDZ?
4. Some ruling question. What is the timestamp of Threshold (Repentant Vampire)? The timestamp of the permanent? Or the timestamp of the last time card amount in graveyard changed? Or the timestamp of the last time the threshold turned on/off?
2. We donate the Voracious Greatshark to the opponent, and then bounce it after the computation is done.
3. Sure, resolving a Repentant Vampire on FDZ seems cheap and easy.
4. I believe it is the last time the Threshold turned on, but I'm not entirely sure.
1 Coat of Arms
2 Xathrid Necromancer
3 Artificial Evolution
4 Arcbond
5 Comeuppance
6 Dralnu's Crusade
Starting a Computation
7 Opalescence
8 Wrong Turn
9 Kaervek's Spite
10 Goblin Boom Keg
11 March of the Machines
Utility: Enchantments/Artifacts
12 Vedalken Orrery
13 Dual Nature
14 Copy Enchantment
15 Mox Jet
Utility: Spells
16 Repeated Reverberation
Utility: Creatures
17 Bloodbond March
18 Cephalid Shrine
19 Stalking Assassin
20 Sunscape Legionnaire
21 Together Forever
22 Stern Proctor
23 Illusionist's Bracers
24 Sigarda's Aid
25 Mimic Vat
26 Mirror of Fate
Volute Hyperstage
27 Spellweaver Volute
28 Obscura Charm
29 Argivian Find
30 Flare of Defiance
31 Mox Ruby
32 Radiant Fountain
33 Glimmerpost
34 World Shaper
Helix Megastage
35 Spellweaver Helix
36 Worldfire
37 Divine Congregatin
38 Acorn Harvest
39 Acorn Harvest
40 Forest
41 Panharmonicon
42 Wood Elves
43 Wormfang Behemoth
44 Brazen Freebooter
45 Possessed Barbarian
White Creature Stage
46 Southern Paladin
47 Possessed Nomad
Black Creature Stage
48 Repentant Vampire
Start
49 Mox Pearl
50 Mana Crypt
51 Shriekhorn
52 Replenish
53 Omniscience
54 Garruk, Primal Hunter
We can get rid of Flash, using the slightly more cumbersome Replenish start. But, if we need Flash to generate a hated Firebrand Ranger, we may be in trouble.
It shouldn't go infinite. If we use Flash to create a hasty token of Repentant Vampire, then the original card ends up in exile/graveyard/library. To get it out of there we need a Bloodbond March trigger. There is no way to get those on the stack while the Repentant Vampire is in library/exile/graveyard, nor can we insert them between the Flash end the Kaervek's Spite cast of the transition, as both are triggered from flashing back Bump in the Night.
So the Bloodbond March trigger already has to be on the stack below the transition. And in any loop we need to refresh it, which requires bouncing the Repentant Vampire with a Psychic Battle trigger from the lower stage.
EDIT: With a Mimic Vat token on battlefield, activate it without resolve. Then we play things, build abilities on the stack, and start a hyperstage transition. Use Flash to imprint Repentant Vampire on the Mimic Vat. Next, Kaervek's Spite will clean all the Mimic Vat, but for LKI the Mimic Vat will still remember the Repentant Vampire card. When after we finish things, resolve the activate ability of the Vat, and have a haste token.
And another question: why the mill-card (Tomb Robber) is so complicated (we need to discard a card), other than a simple mill-card like Shriekhorn? What is the consideration that we must discard to mill?
We use Tomb Robber because we must not allow the opponent to get cards into their graveyard. If they can reach threshold they can activate a donated hasty Repentant Vampire token during a computation which can interrupt an infinite loop at an arbitrary point. That can't be allowed. Tomb Robber costs mana to activate, so the opponent can't use it (and if they could the would put their basic land into their hand). Unlike many mill cards it also doesn't target a player, so we can't use it on the opponent ourself. It also pulls double duty by getting Archaeological Dig from our library into our hand for the additional stage.
EDIT: Oh, using a Mimic Vat activation on the stack to profit from the Kaervek's Spite death might go infinite. I always though that death couldn't be useful since all the Mimic Vats are removed at the same time. But if the activation is already on the stack that changes things.
If Mimic Vat used "last known information" that line wouldn't be a problem, since it didn't have the Repentant Vampire exiled when it was last on the battlefield. But it doesn't and to my understanding the ability actually just looks for exiled cards with the property that they were exiled by the Mimic Vat that is the source of the ability. So in this case it would create a hasty Vampire and cause problems for us.
So I think that is actually an infinite that breaks the deck. Well spotted! Fixing it could be hard, my only on the spot idea would be going back to some bounce-based transition spell. But that would take a major rework of the deck. I guess we are looking at doing that anyway with the attempt to cut Cowardice
We consume few Repentant Vampire-PB triggers each time of transition, but then we can build MANY Repentant Vampire-PB triggers.