Bone Harvest

Bulk creature recursion that pays for itself, which is a rarer combination than the rate suggests. Most graveyard recovery of this vintage returned a single creature to hand at sorcery speed; this stacks any number of them on top of your library instead, then refunds a card at the beginning of the next turn's upkeep so the spell does not cost you the card off the top. The placement is what holds the power in check: creatures go on top of the library, not into hand, so you draw them one per turn rather than dumping a battlefield's worth of bodies back at once. That turns a mass-recursion effect into a slow, throttled refuel rather than a Reanimator-style explosion. The instant speed is the part worth lingering on, though the timing it enables is narrower than it looks: targets are chosen on cast, so the creatures must already be in the graveyard. The natural line is to wait until a board wipe resolves, then reload at end of turn before your opponent can press the empty board, the deferred draw smoothing the tempo cost so you are not stranded down a card for committing to the play. It reads like a quiet value card, but the structure (any number, top of library, free replacement) is a deliberate answer to recovering from attrition without the broken immediacy that direct-to-battlefield reanimation would invite at this price.