Untethered Express

One power's worth of tapped creatures is the whole ask, and almost any developed board can pay it: a token, a mana dork, a one-drop you don't mind idling. That low entry fee turns four mana into a 4/4 trampler that grows every time it swings, and the attack trigger does the rest. A 4/4 becomes a 5/5, then a 6/6, a clock that closes on its own, with trample keeping the chip damage relevant against a stalling board. The design lesson is how a Vehicle rearranges the usual price of an evasive beater. It sits in play as a noncreature artifact, which puts it out of reach of creature removal entirely: a burn spell or an edict cast the turn before combat has nothing to point at, and only artifact removal answers it while it idles. It becomes a creature the moment you crew it, and that timing window is the engine. But the window is narrower than it looks. An opponent holding instant-speed removal can still respond after the crew ability resolves and before attackers are declared, during the beginning of combat step, killing the Vehicle and denying the growth trigger entirely. So the card punishes a deck built to trade with creatures rather than answer them, because the threat is never on the board to be blocked until it is already swinging. Against a removal spell held for the right beat, it punishes nothing.