I was the Teeg player from Round 5, and although I definitely misplayed like a beast during game 3 (like you said), I don't think any of it mattered -- it was the turn 3 Braids on the play with Edict backup that killed me. I couldn't hit 3 mana for Squirrel Nest to save my life
Well played, sir! Looking forward to more tournament reports in the future.
I do not play the mana doublers or Harvest Season, so these are the slots that I use for the untap effects. It is really a tradeoff for speed at the cost of resiliency -- Wraths are a bit more effective against a Mobilize build, but you get some disgustingly explosive plays (occasional turn-2 and turn-3 kills if you draw into Paradox Engine). Your OP makes it sound like you want the deck to be faster, but still maintain the various angles of attack, so that is how I am gearing my feedback.
If you are looking for things to cut, these are my suggestions:
Oracle of Mul Daya -- Solid card, and I note the subtle synergy with your commander, but there is also some tension here because your commander prefers a low land count. To me, this is an easy cut for Crop Rotation, which gains more value based on my next suggestion:
Blighted Woodland -- A five-mana Explosive Vegetation is a slow value play, not really what this deck wants. The appeal of this card is the low opportunity cost since it only takes a land slot, but then you could say the same of Winding Canyons, which has a much higher ceiling. It doesn't look like you have many ways to spend your Seedborn Muse mana, so a second Orrery effect could effectively mean double-digits of mana every round. Canyons also gives you another worthwhile Crop Rotation target, and is fine on its own as for your dudes if you need to play around removal.
Gavony Township -- really only a backup plan, and pretty slow one at that. Where is your Wirewood Lodge?
Thalia's Lancers -- is pretty demanding for a narrow tutor effect. The major upside over something like Survival of the Fittest or Fauna Shaman is that it can grab Cradle... but then, you're also adding Crop Rotation, right?
Elvish Harbinger -- I recently cut this from my list. The card is fine, but never really superb. In the majority of cases, I was better served by Summoner's Pact, Congregation at Dawn, or one of the aforementioned tutors.
Planar Bridge -- This finds Paradox Engine, but man, that's a huge investment. I'd rather one of the aforementioned tutor effects, or if you need Paradox Engine #2, Enlightened Tutor (which I probably need to add to my deck...)
Hope you find this useful!
Hopefully WotC will provide some clarification soon.
Since you have a Gaea's Cradle, Crop Rotation is an easy add that fuels further degeneracy, and otherwise will help shore up hands that are lacking white mana.
In the same vein as Benefactor's Draught, Mobilize, Vitalize, and To Arms! are typically green Dark Rituals that cantrip. Pretty nuts, and help you power out Seedborn Muse or activate Quest for Renewal a lot earlier.
Speaking of which, Winding Canyons and/or Yeva, Nature's Herald let you make the most of your active Seedborn Muse effects. Your board state can go from zero to lethal in one trip around the table.
I would strongly consider Mirror Entity: It let's you go beatdown a la Craterhoof Behemoth, counts as an elf, and also provides another means of going infinite with Wirewood Symbiote + Selvala/Archdruid/Priest/Acolyte.
Finally, Lightning Greaves gives you another haste enabler. It usually pays for itself when you cast Selvala.
I like the idea of Karametra's Acolyte; I may have to steal that for my Selvala deck!
All that said, the ruling as it stands is still anything but clear to me.
I would also love to do something energy-themed, but as is the case with most block-specific mechanics, there just aren't enough options that synergies with Mairsil over Marchesa.
This interaction is very weird so I am trying to learn something from it.
For what it is worth, this interaction is generating some interesting discussion in the rules forum, and it seems the M:tG rules manager is getting just a little pushback on Twitter.
Quicksilver Elemental
Can someone please explain this ruling to me please, in terms of the Comp Rules?
Thanks in advance!
On-topic, I expect Teferi's Protection to have a decent impact on the format. Now whenever someone would joke "LOL maybe he has Angel's Grace!", it will instead be Teferi's Protection, and they might not be joking.
Personally, I plan to go the Voltron route. I've been needing a good beatdown deck, and Mairsil has enough moving pieces to keep me entertained. I see it eventually drawing a lot of hate, though... Buried Alive for Aetherling + Quicksilver Elemental + Phyrexian Devourer is pretty frightening.
The namesake card, Hour of Devastation, is exactly what we want to be doing, but it does not answer either of the biggest indestructible threats in the format: Avacyn, Angel of Hope and Ulamog the Infinite Gyre.
Mirage Mirror is kind of tech I suppose. It could serve as a mana doubler if you can copy someone else's (there is really no need to have multiples in play on our side).
Scavenger Grounds is fantastic, but I will not include it here for the same reason I cut Relic of Progenitus a long time ago -- I probably value my graveyard more than anyone else at the table.
All in all, no changes for this set.
Child of Alara Dreamcrusher is from later in 2010. Ironically, even though it is all commons, it is my most expensive deck since it is all foiled out. I honestly don't play it much anymore, but it still crushes dreams on occasion!
Selvala 1.0 was built in 2014 as soon as it was released. The deck is dumb, and I only bring it out for competitive or show-off games.
Sasaya (flippy green Kamigawa snake) was just built a few months ago. I like it enough that it will probably be together for a long time.
I think Sunset Pyramid is being undervalued. The card is solid.