A-Capenna Express

Not yet bracketed (or genuinely unplaceable).

4cmc green Vehicle with a 7/7 body, activated by either Crew 3 or sacrificing a Treasure. It's a signature payoff in Treasure-matters and vehicle-matters shells where activation is trivial. Outside those archetypes, a vanilla 7/7 that can't attack without setup is too slow for aggro/combo and too passive for control.