Dodgy Jalopy

A Vehicle that reads the top of your curve twice. Its power tracks the greatest mana value among your creatures, so the same fat bombs that make a green deck threatening also determine how hard this thing hits when crewed; a board with a seven-drop turns a five-toughness frame into a trampling giant without any counters or auras attached. The design cleverness is in the second act. Once it dies or gets pitched, Scavenge lets you exile it from the graveyard and dump a stack of +1/+1 counters equal to that same inflated power onto a creature, at sorcery speed. That doubles the payoff for going big: the Vehicle is a beatstick while it lives and a permanent stat transfer after it is gone, and both numbers scale off whatever expensive creatures you were already casting. Crew 3 is the honest tax on all of this, keeping the Jalopy grounded until you have committed bodies to the board. Because power keys off a single high-mana-value creature, one resilient bomb does more for it than a wide sea of small attackers, which pushes it toward top-heavy builds over go-wide ones. The whole package is a graveyard-value engine wearing a vehicle chassis, converting your curve's ceiling into damage now and counters later.