Scaldkin

The two-color tax on the sacrifice ability is the whole shape of this design. A 2/2 flyer for four is unremarkable on its own; the wrinkle is that it carries a built-in burn spell its host deck cannot always afford. A mono-blue list gets an evasive body and nothing else; only a deck splashing red turns the corpse into two damage at instant speed, enough to finish a creature or close out a low life total. That gating is the point: the card was built for a wedge environment where blue-red is an assumed pairing, so the red half of the activation is presumed support rather than a stretch. The flying body earns its keep here, because it keeps the creature pressuring the board while you hold up the sacrifice for the right window: chump-block, then cash the corpse for damage where it counts. Strip the multicolor activation requirement and this is a forgettable evasive common; the cross-color cost is exactly what gives it a second life as reach in the decks willing to pay for it.