[Primer] Six Shades of Dressnought aka Vaka-Nought

[FTW]

I'm not really worried about life loss so much as Thoughtseize being terrible vs Ragavan, and especially bad vs Uro.

That's traditional mode of turn 1 Seize to 1-for-1 with a spell and +1 their graveyard size, at the expense of 1 mana and a turn's tempo. Yeah, that's bad vs both those decks. But if you go EOT Dress Down -> untap -> discard their answer -> Dreadnought, it seems significantly better.

vs Bant discarding StP/Prismatic to clear the way for a wincon really doesn't seem like a bad play even if they are playing towards lategame Uro fuel. Removing that white card at the right time is worth much more (tempo over late game development) when you are Loses-to-Plains.dec.

Really important to reiterate that 4x Saga + 4x Dress Down does not work like you want it to. If making constructs, every Dress Down in your hand is a -1 card penalty. You cut Dress Down before Stifle.

Why not cut Sagas instead? 4 Saga in 3-color seems suicidal unless you're doing Ark4n's Ragavan thing. Dress Down makes more sense in the deck.

Exile exile exile, immediate slashing Ponder slots to move in 2x Cling to Dust; 3c is sketchy af (and colorless lands makes this 3+1c), but at least this allows each color to help find the others.

I know you hate Ponder in general, but you also build 2 color decks. For the 3 + 1c manabase with no relevant turn 1 plays, Ponder does a lot to fix mana. 8 fetch + 6 blue + 4 Ponder at least has similar mana stability to 3-color Delver (nonblue lands are taking the colorless/spell slots), while cutting Ponder makes it worse mana than Delver. Cling doesn't color fix when you start on Swamp. Abundant Harvest can fix from Forest.

Fatal Push out, maxing out Trophy is better, and excess slots go to Bloodchief's Thirst (b/c Push is an auto-loss to Bant midrange). You're dead to Ragavan anyways, so just wait for the ban. Your best bet there was casting Reclaimer and blocking.

Is Thirst just for Jace and Narset? Trophy kills those. Push kills Endurance for 1 mana instead of 4 (crack fetch, cycle Dress Down, cycle Uro, stage III Saga, sacrifice Thopter... Revolt is easy-mode here).

Push's instant speed is very relevant vs things like Dashed Ragavan, flash deathtouch Coatl blockers, flash Hullbreacher tricks, Vial decks, Scroll tricks, manlands, and other things. Push fails vs walkers and big things, but you've already got Trophy for that.