Wash Out

Naming a color instead of a card type is what makes this a precision instrument rather than a blunt reset: against a deck pinned to a single hue, four mana strips the entire board while your off-color permanents stay put, and against a two-color commitment it can peel away half of what they spent several turns assembling. The bounce is symmetric, though, since the chosen color sweeps everything on the battlefield including your own permanents of that color, so the play rewards a manabase and creature suite deliberately built off the hue you intend to wash. The sorcery speed and the four-mana price are the real constraints: this cannot ambush a combat step or react to a deployment, so you resolve it before they can rebuild and accept that you eat your own matching permanents in the process. It punishes greedy color commitments by design, a card whose value scales directly with how hard the opponent leans on one shade. And because it returns rather than destroys, it sells a turn instead of a permanent answer; against a board that took several turns to develop, that single turn is frequently the whole game.