Magus of the Unseen

Steal Artifact, rebuilt around a body and rented out one untap at a time. Where the one-shot enchantment commits four mana to a permanent grab, this trades durability for repetition: every turn, a fresh activation pulls a different artifact across the table for a single combat or a single tap. The haste clause is what turns the loan into a weapon, letting a freshly stolen artifact creature swing or its activated ability fire the instant it changes hands. The trailing "tap it" rider does the balancing work, returning the artifact exhausted so its controller cannot immediately reuse it and you cannot loop it into a defensive crouch on their turn. The whole package hangs on a 1/1 Wizard with a tap cost, so it asks for protection and a board worth stealing into; it does nothing in a room with no artifacts, and it punishes anyone leaning on a single key piece of equipment or a mana rock. It is a clean expression of an early design sensibility that distrusted permanent answers: rather than handing blue an artifact-control hammer outright, the card makes you keep paying for the privilege, one untap at a time.