There's certainly all kinds of Selesnaya counter decks as well though that can just bypass the life entirely and be putting their counters on this thing for card draw, and there's a decent amount of abilities that put +1/+1 counters on things whenever you like which means you can get a draw on multiple players turns
Card Name Type Ongoing Scheme Rarity Common rules Text (An ongoing scheme remains face up until it's abandoned.) Whenever a player casts a spell, you draw a card.At the beginning of your upkeep, if you drew a card last turn, abandon this scheme
Almost better than Carmen, even
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You can later exploit this effect with cards like Sun Titan or Ephemerate, allowing you to draw even more cards as the game progresses
This blocker was an excellent tool for decks that loved to return DON