Custom MTG cards are the answer most people didn't know existed
For example, if Woodcutter's Grit gave Identity Thief +3/+3 and hexproof earlier in the turn, Identity Thief will still have those bonuses after copying a creature
That's just so game-breakingly good
In War of the Spark Standard, Liliana served as a solid win condition for midrange strategies, flooding the board with tokens and drawing you cards whenever your creatures died
Im not sure if Id jump through too many hoops to try to break this card, but in any deck where youre running enough pinpoint removal to destroy a creature, or sacrifice outlets to kill your own creatures, this might be worth a slot, especially if youre also running token synergies too, like Chatterfang, Squirrel General or Grismold, the Dreadsower