Make Disappear

Counter target spell unless its controller pays two mana: the soft counter has appeared under a dozen names since the earliest sets, and the tax version has always carried the same structural weakness. Late, against an opponent flooding mana, the tax is trivial and the counter does nothing; that is the price of a two-mana answer that trades up in the early turns. Casualty patches exactly that failure. Feed the spell a small attacker as you cast it and it copies itself, the copy free to seek a new target, so the arithmetic on the opponent's side doubles: one target spell, but now two taxes stacked against it. Pay both, or watch the spell die to the second when the first went through. The cost is where the tension lives. The mechanic demands a body at the moment of casting, which means it wants a board of expendable tokens or chump attackers already deployed, not a control shell sitting behind an empty battlefield holding up interaction. That is deliberate friction: the most control-coded effect in the game gets welded to a resource control decks are least willing to spend. It reads as a soft counter and plays like a tempo tool, and where it belongs depends entirely on whether there is already something on the board you are content to lose.