Strangling Spores

Instant speed is the whole of the price here, and the card is honest about what that price buys. A flat -3/-3 with nothing bolted on (no card draw, no surveil, no scaling) is black's combat-trick removal reduced to its load-bearing function: kill a creature, do it on their turn, ask nothing of your own board to do it. The premium over sorcery-speed alternatives at this size pays for one thing worth defending, which is the ambush: holding the answer through combat, blowing out an attack, or waiting until the last possible moment to size up the threat. Toughness subtraction also covers a band that flat destruction overpays for and damage-based removal misses: indestructible creatures, planeswalker-adjacent bodies, the small stuff you would rather not spend a hard-kill spell on. The lineage worth naming is the -X/-X line itself, the school of removal that shrinks a creature to nothing rather than destroying it outright, running back through cards like Last Gasp and its many cousins. Nothing here does more than the arithmetic promises. It is removal built for the floor of a curve rather than its ceiling: clean, predictable, and priced for a context where spending this much to answer one creature at instant speed reads as a fair trade rather than an embarrassing one.