So, the old Removal.dec pile has some pretty nasty stuff available. The hardest thing to figure out are a card advantage engine and a win condition. I'm going with Map + Karn for this first iteration. Also, 2xTER.

3 x Treasure Map
2 x Moment of Craving
2 x Lava Coil
4 x Discovery // Dispersal

3 x Deafening Clarion
3 x Mortify
3 x Bedevil

3 x Kaya's Wrath
4 x Karn, Scion of Urza
2 x Vraska's Contempt
2 x Consecrate // Consume

2 x The Eldest Reborn

1 x Banefire


+ 24 duals, 1 Detection Tower and 1 FoR.

Current sideboard is obviously tentative, mostly trying to have a chance vs UW variants.

4 x Duress
4 x Lightning Strike
2 x Carnival // Carnage
3 x Angel of Grace
1 x Angrath, the Flame-Chained
1 x Banefire

Well, not going into details, I'd definitely switch to 4 maps 3 karns.

What do you do against Temur, Esper and Nexus?

Current UWx plan is Duress + burn
I'm trying Carnage and Angrath but I'll probably just end up adding more burn instead.
The flashy angel should help against the non-fog variants too.
Note that Ux Control is supposed to be the bad matchup for this.
Also, I mainly play Esper Control myself and I have seen exactly zero mirrors and one Fog deck since Allegiance.

What Temur build are we talking?

FoR = ? Don't tell me it's Fountain of Renewal, lol!

Deck seems really slow, the card advantage spells are slow, and the kill condition is slow as well. Karn is barely a kill condition in any case since it takes a long time to kill opponent with Karnstructs. Not sure what you can run though. Creatures don't seem like a good idea since they just enable opponent's creature kill spells and you have no counterspells to protect them; planeswalker ultimates would be the next natural choice but Mardu planeswalkers don't synergize that well with the control gameplan ... maybe Huatli, Warrior Poet?

Field of Ruin.

Yeah, I don't think the deck is viable. Slow and grindy is normal for tapout Control but this needs an Ob Nix walker or a Lily or smth.

Screw it, I'm going to max out on Carnarium, Seal Away, Lava Coil, Consecrate, Settle, Binding and Contempt and run 4xKaya as my wincon.

At least meme decks are fun.

...wait, going Esper with this could actually be hilarious.

So this is what Ali Aintrazi went with:

https://www.coolstuffinc.com/a/aliaintr ... highlights

I don't even

That can't be a serious build. 4 Cry of the Carnarium and 4 Kaya's Wrath = autoloss against control decks.

Yeah, that's an extremely anti creature build o_O