Facevaulter

A Goblin that eats other Goblins for a temporary pump is a strange pairing of tribes: the tribal aristocrat lives in black here, not the red where Goblins built their reputation as a swarm. The ability is repeatable but each activation costs both mana and a body, so the math only favors you when the Goblins you sacrifice have already done their work (a dead attacker, a token, a creature about to die anyway). That turns this into a sink for the back end of a board rather than a force multiplier for the front: it does not make your team bigger, it converts spent Goblins into damage on a single attacker. The pump expires before your next turn, so the card stays a combat closer rather than a permanent threat: you commit the fuel during your attack step and accept the diminished board afterward. As a piece of cross-color tribal design it points at a build that wants Goblins in black for their death value, a niche the color pie rarely offers but occasionally rewards.