Kor Duelist

A 1/1 for one mana that contributes nothing to a board on its own, until it picks up a piece of gear and becomes the cheapest legal carrier of double strike in white. The body is deliberately negligible because the equipment is meant to be the real card; the creature is just the most efficient way to hold it. Attach any cheap armament and the combat math shifts hard: the first-strike portion lands before the blocker can deal damage back, so a small blocker dies before it ever connects, and against a creature that survives the first hit, the regular damage follows alongside whatever the blocker deals, letting this creature win trades a vanilla 1/1 has no business winning. The payoff rides on a single point of failure. The double strike is conditional on staying equipped, so the card lives and dies on a deck's ability to suit it up cheaply and keep mana free to re-equip if the gear has to move. A removal spell aimed at the creature doesn't destroy the equipment (gear stays on the battlefield when the carrier dies), but it wastes the mana and tempo already sunk into attaching it, and leaves the damage plan hunting for another body. The keyword it gains while equipped is the entire point of the design; the trivial stat line exists precisely so the gear, not the creature, decides the game.