Wretched Doll

A 3/1 for two mana that grinds its own graveyard is a familiar black shape, but the Toy typing and repeatable Surveil pull it toward engine work. The aggressive body lets it trade or chip in before it settles into its second job: paying black and tapping to Surveil 1, once per turn cycle, as long as it stays on the battlefield. That gating is the design tension. The tap cost normally caps the output at a single Surveil per turn, so the card cannot dump a pile all at once; it drips one card at a time, either sculpting your draws or seeding the graveyard, turning a self-mill or reanimator shell's stray mana into steady fuel without committing a card to the effect. The reward accrues over many turns of grinding graveyard resources rather than a single burst of library-emptying. The 1-toughness body is the price for the front-loaded aggression: fragile enough that opponents can answer it before the engine matters, which keeps a recurring digging tool from running away with games unattended. The two costs pull against each other by design, one asking you to race, the other asking you to settle in, and the card only pays off once you commit to the second.