Fluctuator

Cycling was printed in Urza's Saga as a costed escape valve: pay the cycling cost, pitch the card, draw one. The design discipline of that mechanic is the cost itself, the friction that keeps cycling from being free card advantage on a stick. This artifact attacks that friction directly, cutting two generic mana off every cycling activation you make. Since most of the cycling cards from that era cost exactly to cycle, the practical effect is that they cycle for nothing once it resolves, turning a deck stuffed with cyclers into a self-emptying engine that converts its land and dead cards into a stream of fresh draws. That is the structural inversion at the heart of the card: a mechanic designed to be paid for becomes a mechanic you can spam, and the only remaining limit is how many cyclers you can pack into one deck. It is the rare enabler that does not generate value on its own (it draws no cards, makes no mana, affects no board) but quietly rewrites the economy of an entire keyword. The whole point is to find the cards whose cost it zeroes out and let the chain run. A combo piece whose payoff lives entirely in the cards around it, and a clean illustration of how cheaply a single cost-reducer can break a balancing mechanic when the mechanic's restraint was the price tag all along.