Blasting Station

The untap trigger is the entire engine. Sacrifice-for-value outlets are common, but most tap or carry a once-per-turn ceiling that caps how much of a board can be converted into damage. Here, every creature entering offers to untap the artifact, which means a single token-doubling effect or a creature that makes copies of itself collapses into an arbitrarily large ping: each new body untaps the station, the station sacrifices a body, the deaths or the next entry refill the board, and the loop runs until the opponent is at zero. That makes it a combo finisher dressed as a removal toy, and the slow rate (a single point per activation) is the only thing keeping it honest; the untap mechanic is what lets a deck route around that ceiling entirely. Because the trigger cares about the exact moment a creature crosses onto the battlefield, persist creatures, undying creatures, and any engine that recreates fodder turn the sacrifice cost into an input rather than a tax. The strategic question it poses is "how cheaply can I make a creature appear, and how many times," with the answer deciding whether the station grinds out a slow win or kills in a single turn. Sacrifice outlets that double as win conditions are rare for a reason; this one folds the kill, the outlet, and the untap loop into one colorless artifact any deck can run.