Careening Mine Cart

Crew 1 is the loosest tax a Vehicle can carry: a single creature with one power turns this into a 3/3 attacker, which means almost any board state can activate it and almost any leftover body can pay for it. That low barrier is the whole calculus, because the payoff triggers on the attack declaration itself, not on connecting. Every combat step it swings, it mints a Treasure whether or not it gets through, so the ramp accrues the moment attackers are declared rather than resolving on damage: a body that pressures the board and refills your mana even when it is chumped or double-blocked. The Treasure clause pulls double duty in an artifact-count sense too, feeding sacrifice fodder, affinity-adjacent counts, and fixing without asking you to build a dedicated mana engine. What keeps it grounded is the commitment cost baked into the trigger: the Treasure is contingent on attacking, so a cart held back on defense mints nothing, and a 3/3 with no evasion is easy to trade into. It is a colorless three-drop built for decks that want incremental ramp bolted onto a clock rather than a dedicated rock, and it rewards going wide (cheap crew, cheap Treasure spend) over going tall.