Neurok Transmuter

Type-changing as a repeatable weapon, sold in both directions. The first activation turns any creature into an artifact, which means it can suddenly be hit by Shatter, Naturalize, or whatever artifact removal a player keeps in reserve, and it folds a creature into the affinity and metalcraft accounting that an artifact-dense board cares about. The second activation runs the opposite way: it strips a target artifact creature of its artifact type entirely, pulling it out from under those same answers and recoloring it blue along the way. That symmetry is the design statement. This is a Wizard whose job is to decide what counts as an artifact and when, a control valve on type-matters interactions rather than a beater. The cost is what keeps it sane: each mode wants a single blue and resolves as a one-turn flicker of type, so you pay again every time you want the lever, never owning a permanent retyping. In an era obsessed with artifacts as a tribe (with payoffs, hosers, and synergies all keyed off the artifact card type) a creature that can hand out or revoke artifact-hood on demand is doing something genuinely unusual: it weaponizes the rules text of every other card on the table without changing anything on its own.