Massive Raid

The deal here is straightforward: you cash your board out as a single burst of damage at instant speed. That instant-speed clause distinguishes it from the long line of "X equals creatures you control" payoffs that came before, most of which were sorcery-speed alpha strikes or static team buffs. Pricing the count as direct damage to any target, deliverable on the opponent's turn, lets a swarm deck convert its headcount into a combat-trick blowout or a burn spell that ignores blockers entirely. The tension it resolves is the classic go-wide problem: a token deck stalls the instant the ground gums up with chump blockers, and this routes around the gridlock by aiming the body count at a face or a planeswalker. The catch is the obvious one. It scales only as far as your creature count, so a topdeck off an empty board is a dead card, and a sweeper the turn before strands it. That fragility is the price for an effect that, with a full board, ends games out of nowhere at a moment the opponent cannot sequence around. It rewards the deck that was already committing bodies to the table and gives that commitment a second use beyond attacking.