Yotian Frontliner
A one-mana body that keeps working after it dies is a rare thing to price cleanly, and the arithmetic here is unusually tidy. The attack trigger hands out a +1/+1 to a second attacker, so a lone 1/1 turns into two points of damage the moment it swings alongside anything; run more than one and the aggression compounds. What gives the design its second act is the white unearth cost, which brings the artifact back with haste for exactly one attack step before exile takes it. That is not a value engine so much as a burst: a graveyard-stored anthem trigger you can cash in on the turn you need to push the last few points through, then it is gone. The interplay between the two halves is the whole point. As a body on the board it is a cheap, sticky enabler that makes the rest of the team hit harder; as a card in the yard it converts a single white mana into one more attack's worth of pressure without asking you to redraw it. Aggressive artifact decks rarely get a one-drop with this much reach into the late game, and the fact that it is a colorless creature you can slot anywhere while paying only white for its recursion is a quiet flexibility that pays off long after turn one.
