Mindlink Mech

A copy effect wearing a Crew cost, which is a stranger place to put one than it sounds. To steal a body's text, you tap that specific creature to pay Crew 1: the copy only ever draws from a creature that crewed the Vehicle this turn, so the choice of what to become is bound up in the act of crewing rather than freely chosen from the whole board. Both the Crew ability and the "becomes crewed for the first time" trigger use the stack, which leaves the copy vulnerable to a response before it resolves; commit the crew, and the opponent gets a window to remove the donor or the Mech in reply. The 4/3 flying frame overwrites the target's own stats and grants evasion, keeping the copy on-rate no matter how large or small the donor was. What survives is ongoing text (static abilities, attack triggers, activated abilities) rather than any enters-the-battlefield payoff, because the Mech is already on the battlefield when it transforms; there is no arrival to retrigger. The nonlegendary clause walls off the marquee bodies and commanders by default, keeping the target pool to workmanlike creatures whose printed abilities outrun their own reach: a lifelink brute with no evasion, a menace attacker with a useful combat trigger. Crew one of them, and the Mech turns that text into a 4/3 flier for the turn.