Bloodshot Cyclops

Power-into-damage conversion was already a known trick by the time this cyclops arrived: Fling hurls a creature at any target for damage equal to its power, and Goblin Bombardment turned a board into a stream of one-shot pings. What the cyclops does differently is bottle that conversion into a tap-gated body, so the redirection becomes a repeatable engine instead of a spell you cast once and lose. The sacrifice clause is where the cost actually bites: every activation eats a creature, so firing it is a board-management decision, not free reach. Feed it a creature you were going to lose anyway, or one whose power you can inflate, and a single tap can deal a serious chunk to any target; feed it a vanilla body and you have spent a card and a turn to throw a few points. Two restrictions telegraph the plan. The tap symbol means it sits idle the turn it lands, so the damage always arrives a turn behind, and a removal spell aimed at the cyclops dismantles the whole apparatus before it pays off. Left alone, it is a slow 4/4 that swings for four. Built around (a stable of expendable bodies, a pump effect, a token producer to keep the sacrifice fed), it converts your entire board into burn pointed wherever it hurts most.