Espers to Magicite

Graveyard hate that hands you a body is old news; what this instant does with the body is the wrinkle. Exiling every opponent's yard is the tax-collection half, but the reward clause reaches into the pile it just made, copies one creature card out of it, and strips the copy of every type except artifact. That last clause is doing quiet, deliberate work. By reducing a creature card to an artifact token, the effect keeps only what the printed text says while cutting the card loose from its creature identity: it dodges creature-specific removal, and it cannot be blocked or brawled with because it cannot attack or block at all. The copy still carries the original's mana cost and colors (copy effects change types here, not color), so you are not manufacturing a colorless artifact; you are laundering someone else's creature into a permanent that keeps its abilities and abandons the rest, tap abilities included, provided they never depended on being a creature. The timing is the other half of the appeal: at instant speed, you can wait until a graveyard is worth robbing (a fetched-away combo piece, a milled finisher) rather than firing blind on your own turn. The "up to one" language is the seam to watch, since the disruption still lands with nothing worth copying, keeping the card live as pure hate when the yards hold no creatures. Mandatory exile, optional theft, with the type-stripping as the mechanism that makes the theft clean.