Impromptu Raid

The cheat unwinds itself: a creature you reveal off the top arrives swinging, then leaves play at the next end step. That places this somewhere between true reanimation and the dramatic one-shot that lets the prize stay, and the difference is structural. The repetition is taxed twice over: each activation costs mana, and it costs whatever sits atop your library, since a non-creature card goes straight to the graveyard. So the deck that wants this is built around bodies whose value is in the transition rather than the staying: an attacker whose enter-the-battlefield trigger does the work, or a creature whose death is the payoff. The card has no interest in keeping its target, which means you lean into impermanence rather than fight it. Both the casting cost and the activation run on the same flexible Gruul pip, so either color can drive the engine alone while you keep the library stocked with attackers. The ability carries no timing restriction, which is the part that elevates it past a slow value loop: fire it on an opponent's turn and the enter trigger lands at instant speed. The window the sacrifice opens is finicky, though. Activate before the opponent reaches their end step and the creature dies at that end step, on their turn; activate during their end step and it survives all the way to your own end step. That grind (the activation tax, the self-mill, the forced sacrifice) is what separates it from the reanimation spells it superficially resembles.