Detention Chariot

White's temporary-exile removal has always lived on permanents that can be answered on their own terms: an enchantment like Banishing Light, a creature like Fiend Hunter, each of which hands the exiled thing back the moment the answer dies. Bolting that effect onto a Vehicle rewires the exchange. The exile fires as the Vehicle enters, but a Vehicle sits inert until crewed, so the creature removal a defender holds up against a threatening body does nothing while it idles: to reclaim what was lost, an opponent has to reach for artifact destruction rather than the spells already in hand. That gap between "answer the permanent" and "answer the thing doing the exiling" is the design lever the whole card turns on. The 6/6 that arrives once you tap three power's worth of creatures is closing speed layered atop the removal, and cycling for a single white gives it a floor: when the board is empty and there is nothing worth exiling, it converts to a card instead of stranding a six-drop. It targets an artifact or a creature, so the same effect that neutralizes a bomb can also strip an opposing engine. The cost is genuine. Six mana for something that returns its exile the instant it dies asks you to protect it, and living as an artifact rather than a creature cuts both ways: it slips past creature removal but walks straight into anything that answers artifacts.