Open the Graves

Death insurance, written into an enchantment. The nontoken clause is the whole balancing act: the Zombie it makes is itself a token, so the engine never eats its own output, and you have to keep supplying real creatures for it to convert. That constraint is why this never spirals into a self-feeding loop. What it actually does is launder your battlefield: every nontoken creature that dies leaves a 2/2 in its place, which turns sacrifice outlets, profitable blocks, and removal-bait into a steady drip of bodies rather than a net loss. The strategic axis it sits on is attrition, not explosion. Pair it with a way to repeatedly kill your own creatures and it becomes a value spigot; play it over a board of expendable nontoken creatures and every trade ahead becomes a trade even. The five-mana cost and the do-nothing-the-turn-it-lands rhythm keep it in check: it asks you to have already built the kind of deck that loses creatures on purpose, then pays off the plan you were running anyway. Among black aristocrat-style engines, it states the idea about as cleanly as the archetype allows, replacing dead permanents with fresh fodder so the sacrifice machine never coughs.