Ovalchase Dragster

Six power with haste for four mana is a rate that has no business existing on a body that can attack the turn it arrives, which is exactly the argument the Vehicle frame was built to make. The 6/1 is the bargain laid bare: a one-toughness frame that dies to any blocker, any ping, any incidental chip, but that only becomes a creature at all when you decide it should. Crew 1 makes that decision nearly free, and that is the real mechanism at work: tap a single expendable body, animate the Dragster, and swing for six trampling. Because crewing can happen whenever you hold priority, the choice is entirely yours: leave it as an inert artifact on the turns you would rather not expose it, and creature removal and combat tricks cannot legally touch it. The vulnerability never vanishes; it gets scheduled. From the moment you crew it until the end of that turn it is a fully exposed creature, open to instant-speed answers, so animating it is a window you open on purpose rather than a permanent liability. That is the whole design compressed: a creature's inherent fragility converted into a fragility you meter out at your own timing. A 6/1 creature is something any opponent can trade with on their terms; a 6/1 Vehicle picks its moment and is otherwise off the target list. Trample keeps it from being chump-blocked into nothing, and haste starts the clock the instant it lands.