How youre going to use Doomsday varies with the format (Cube, Vintage, EDH), but youll usually want a card like Laboratory Maniac or Thassa's Oracle and draw spells like Gush or Gitaxian Probe
6 Maralen Of The Mornsong Changes Card-Drawing Forever If Winter Orb interferes with the untap step and Paradox Haze replicates the upkeep, then it's time for a card to change the rules for the draw step, too
Additionally, there are three other cards we discussed quite heavily
Further, Westvale Abbey got even better in the deck, now that the Garrison can spit out even more Thopter tokens
Instants and Sorceries Much like the creatures, the instants and sorceries in this deck turn incredibly cheap, small instances of damage into cheap bazookas to the face
Mai, Scornful Striker might be sideboard material at best, but I expect it to matter a ton against spell-based matchups