Temur War Shaman
Most manifest cards treat the flip as a slow, optional value play: a face-down blocker you eventually unmask when you have spare mana. This one turns the reveal into a trigger. Whenever any creature permanent you control is turned face up, it may fight a creature you don't control, and that clause doesn't care where the face-down permanent came from: morphs, other manifests, or the one this creature manifests on entry all set it off the instant they flip. The entry trigger guarantees at least one primed target, but the real engine is the board state you build around it, stacking hidden permanents so every unmasking doubles as a removal spell. What makes the design sharp is that the fight fires on the act of turning face up, not on attacking or dying, which unhitches green's removal from combat math entirely: you kill on your own timing, whenever you choose to pay a flip cost, at whatever moment leaves your creature big enough to survive. The result reads like a beater but functions like a repeatable, on-demand removal outlet with a body attached, and the removal arrives concealed until the mask comes off.
