Mogg Infestation
A board wipe that hands the wreckage back as an army, and the directional ambiguity is the whole design. Aim it at an opponent and it functions as a sweeper, except the cleanup leaves them a swarm of fresh blockers, which is why the symmetry rarely resolves cleanly in your favor. Aim it at yourself, with a board of expendable creatures or anything carrying a death trigger, and the "Destroy" line stops being a drawback and becomes an engine: every body that dies converts into two Goblins, doubling a token count or refueling a sacrifice loop. The card is built around the gap between what destruction usually means (loss) and what it means when you have already extracted the value or planned to lose the creatures anyway. The check on all this is that the destruction is mandatory and total; you cannot pick which creatures survive, and the tokens go to the controller of the destroyed creatures, not to you. That targeting rule (you choose the player, that player rebuilds) is what makes it read as a strange, self-cancelling removal spell to anyone evaluating it at face value, and what makes it a payoff to anyone who has stacked the board with creatures whose deaths matter more than their continued existence.
