You ready for the jankest win condition you've ever seen?
On board: World Shaper+Amulet of Vigor+Spitting Spider+Miren, the Moaning Well and at least 3 open mana
In grave: Enough lands to bring the total number of lands on board and in the grave to 13, at least one of which is Ipnu Rivulet and one is Memorial to Folly
The combo: Activate Miren, the Moaning Well's effect, sacrificing world shaper. In response to the World Shaper trigger, sacrifice all lands on the field to Spitting Spider's ability. Resolve world shaper, bringing back at least 13 lands, including one or more of Memorial to Folly, Ipnu Rivulet, and Miren, the Moaning Well. Everything untaps because of Amulet of Vigor. Pay 3 mana and sacrifice Memorial to Folly to return World Shaper to hand, and then cast it for 4 mana. Pay another 3 mana and sacrifice World Shaper to miren's ability. In response, float your last remaining mana and sacrifice all your lands to Spitting Spider, starting the loop again with one additional mana. Do this until you have 1/2 as much mana as your opponent has cards in their deck, half of which is blue. Then, repeat the loop, except sacrificing Ipnu Rivulet to mill your opponent each loop instead.
The rest of the deck that is not the combo or mill to set up the combo is Green Black midrange cards like thoughtseize and Tasigur to help stay alive. This deck also has suprising resiliency and grinding ability, since every card in the deck can be returned to hand consistently (Buried Ruin gets amulet, Shriekhorn, or Engineered Explosives; Memorial to Folly grabs any creature; Tasigur can theoretically get any non-land card; and Life from the Loam returns itself and gets all of your lands, including the ones that then get other cards)
Tips: Amulet of Vigor is super helpful for speeding the deck up and saving life since you don't have to pay for shock lands, so keep it early if possible. Dryad of the Ilysian Grove is the secret best card in the deck, since it speeds up the combo, gets you to two spell turns faster, and lets your utility lands tap for colored mana while being a good blocker vs. aggro. Ipnu Rivulet can mill yourself if you are just trying to get cards into the graveyard, and Scavenger Grounds is also a desert. 12 lands won't get you the win with the combo since you use all of your mana each time and therefore can't mill your opponent out, but you still get infinite life from Miren, which is enough to beat a lot of decks. Finally, remember that two Miren, the Moaning Well still lets you combo, since you can tap one for mana during the combo and then legend rule that one.
