Cauldron Familiar

The engine that made Food a real subtheme instead of a flavor prop. On its own the drain-and-gain enter trigger is trivial: one life each way, the kind of number nobody sacrifices a card for. The recursion clause is where the whole design lives, because it converts a Food token into a repeatable, undying life-swing every time the Cat comes back. Loop it with a token generator that makes Food on the Cat's death, and each cycle costs a Food but produces a Food, so the drain runs as long as you have a sacrifice outlet and the mana to reset it. That turns a 1/1 into a slow inevitability clock and a graveyard-based attrition tool that shrugs off spot removal: kill it and it returns for a Food. The tension the designers had to solve is that the trigger has to be small enough to be safe at one mana but the return has to be cheap enough to abuse, and they resolved it by pricing the payoff in Food rather than mana or life. That pairing of a token resource with a graveyard-return body is what let the archetype grind: the Familiar is the drain, and the Food is the fuel, and neither does much without the other. It reads like combat filler and functions like a combo piece.