Foul Renewal

The elegance here is that the size of the recursion target and the size of the removal are the same number, read off a single card. Buying back a fat creature also hands you the biggest available -X/-X, so the heavier the body you reclaim, the more of the opposing board it shrinks on the way to your hand. That coupling is the whole point: this is not a plain raise-dead stapled to a debuff, but a spell that wants you to have died with something large, and rewards holding a heavy creature in the bin rather than rebuying a cheap utility threat. It keys off toughness specifically, not power, which lets defensive walls and high-toughness midrange bodies double as removal payloads they would never threaten with in combat. The flexibility carries a setup tax, though: a creature must already be sitting in your graveyard, and the larger it is, the slower the whole thing is to assemble, since this only returns a card to hand, not a body to the battlefield. As a two-for-one at instant speed (a creature recovered, a creature subtracted), it asks for a deck willing to seed its own graveyard with sizable bodies, then collect on both halves in a single end step or combat step. Modest-reading at a glance, but the same toughness number quietly does two jobs at once.