Revenant

A flying body whose size is a ledger of how much has already died, which inverts the usual relationship between a creature and its graveyard. Most cards that read the yard pay it out as a one-shot: a return-to-hand, a reanimation, a drain trigger that empties the count. This one banks the graveyard as a standing statistic, so every creature that hits it before and after the Revenant resolves keeps feeding an evasive threat that never has to leave play to cash in. The restraint lives in the counting clause: it reads only creature cards in your graveyard, not all cards and not both yards, which keeps the engine honest. You earn the size by losing creatures, and the flier punishes an opponent for the very board-clearing that filled the bin. It also means the body is fragile in the way all graveyard-counters are: exile effects and graveyard hate do not just deny a one-time payoff, they physically shrink the creature on the battlefield, so a single graveyard-exiling spell or a tucked-away yard can drop it to a 0/0 mid-combat. That volatility is the whole character of the card. It rewards a deck that grinds, sacrifices, and trades creatures freely, then turns the contents of the bin into a wincon worth guarding the way other decks guard a planeswalker.