Oni-Cult Anvil

Any artifact leaving the battlefield during your turn feeds this thing, and it does not care how it leaves: a Treasure cracked for mana, an equipment moved by a blink, a token dying in combat, a permanent destroyed by an opponent's removal. Every departure fuels the same Construct trigger. The once-per-turn cap is the balancing choice, and it does real work: it caps you at one body a turn no matter how many artifacts you burn through, which turns the engine into a steady drip rather than a one-turn explosion. You are rewarded for a slow, repeatable churn instead of a chained sacrifice combo. The tap ability is both the payoff and the pressure valve, consuming an artifact to drain each opponent for one and gain a life, which means the Constructs the anvil produces can be eaten by the same anvil to close a game. That loop (make a token this turn, sacrifice it, remake it next turn) is a slow but relentless clock that also fires every artifact-death payoff in a black-red aristocrats shell. This is the kind of design that reframes your board: instead of protecting your permanents, you treat every trinket as fuel to be spent, and each cheap artifact becomes a scheduled drain trigger rather than an asset to defend.