My favorite deck for pioneer! Prefer flavor more than anything else, but I do like to make it function as much as possible at a competitive level. Shambling Vents and Hall of Storm giants are great when you've been playing a grindy matchup and hopefully are enough if graveyard is exiled. I am trying to figure out alternate wincons or ways to safely protect the graveyard, but nothing has come to mind yet.
-Mainboard
2 cmc: Drown in the Loch, this card has had quite a few moments where it's paid off more than expected. It is slightly a dead card early game but with how much they will either sac or discard it should counter or destroy as you need often enough.
Thought Erasure; This is one of my favorite discard effect cards printed. Quicker discard is out there, however thought erasure has been nice for the surveil as well. If you have an artifact or enchantment on top that you would prefer in the graveyard or a land you don't need it has been great for that. Not to mention it isn't limited in what hit discards outside of lands.
Guild Globe: This is fairly obvious what it's meant for. It replaces itself then you sacrifice it with Doom Foretold no love lost. I've been torn between this, Golden Egg, and Omen of the Sea. I've settled on this for now because not having blue for Omen sucks. And this over golden egg for more mana fixing than anything has saved me more often than I expected.
3 cmc: Disinformation Campaign, while this one is much slower than slapping in omen of the sea or golden eggs or the likes. I've really enjoyed the discard effect it has had often not to mention a little into the match where the opponent is likely just sitting on a card that wanted to cast later to win. And the slight synergy it has with Thought erasure is quite fun.
Oath of Kaya; Oath has turned out to be better than I expected. 3 damage hits a lot of creatures or enough for some planeswalkers if they were ticked down that it's been quite enjoyable. Great permanent to expect to sacrifice to Doom Foretold and the gain 3 helps a lot since most strategies expect to win via damage to your life total.
4 cmc: Demonic Pact; Not much to say lots of good things, you have some time to find a doom foretold if you don't happen to have one when you bravely decide to play this.
Doom Foretold: Think this has taken the spotlight of my all-time favorite card and is what the deck is built around. Most opponents who don't know better usually try to outrace you and more often than not in my experience that strategy fails them. It is a wall of text, but this thing is sick.
Kaya's Wrath: This is a personal pick there are a good few better options out there than Kaya's Wrath but I love this card. A little lifegain when I decide I have to board wipe while I own creatures is sort of whatever. But I love the artwork and kaya feel free to use better board wipes.
Supreme Verdict: Okay so I decided to use one better board wipe...
The Wandering Emperor: So, the opponent is probably going to assume you have this every time you pass with the 4 mana up. But that's enough sometimes that they choose not to over commit and like most control decks, you love when they give you more time.
5 cmc: Teferi, Hero of Dominaria; gonna' be honest I miss Teferi, Time Raveler and while yes he was a powerhouse, he made this deck extremely fun. You could surprise shotgun out Dance of the Manse as well as the -3 wasn't the worst thing when bouncing say a Guild Globe or Disinformation Campaign. But oh well. This one is here mostly for constant card draw, also untaps to later in the match which lets you leave up drown in the loch so that's neat. And the ultimate is always a serious threat if not dealt with.
Last card is Dance of the Manse, and this thing synergizes well with this deck. Even if they board wipe sometimes you may just outright when bringing back enough Oath of Kaya's to ping their life total like crazy. Or just draw a bunch of cards and of course with enough mana into the X cost they are all 4/4 creatures which can demand an answer especially later into the match when their health is low enough.