Replication Specialist

The trigger's phrasing is the whole engine: it fires on any nontoken artifact entering, not on casting one, which is a wider net than it first looks. Reanimated artifacts, artifacts fetched straight to the battlefield, artifacts that flicker back in all feed it, and each one offers the same optional tax to double it. The optionality does as much load-bearing work as the trigger itself. Paying is a choice per artifact, so the card never strands you: cheap artifacts get copied when the copy is worth a card, expensive ones get copied when the payment is trivial next to what you are duplicating. That flexibility is part of what balances a repeatable copy effect, along with the fact that it only ever produces token copies. The nontoken restriction is doing real work here, since it means the card's own output cannot chain back into itself: each new token is inert as far as the trigger is concerned, so the loop is one deep rather than infinite. Set against older artifact-copy designs, most of which were one-shot spells or fragile enchantments, this puts the effect on a 3/4 flyer that can hold the ground it makes and pressure life totals while the value accrues. The Moonfolk artificer framing is apt: a creature that manufactures duplicates of whatever machinery you deploy, turning a single artifact entering into a decision about whether one is enough.