Wrench

Two artifact subtypes that had never shared a card collide here, and the collision is the whole design: it is a Clue, so it wants to be cracked for a card, and it is an Equipment, so it wants to stay bolted to a creature. Every game with it becomes a negotiation between those impulses. Attached, it grants a stat bump, vigilance so the body can swing and still leave the tap ability online, and a repeatable pseudo-removal that pins down a blocker or attacker for three and a tap. Left uncracked, or once the board stalls, it cashes out for a card instead. The equip and sacrifice costs overlap enough that you rarely afford both cheaply on the same turn, which is the tension: commit to the beatdown package or bank the card. That single-white cost keeps the bundle honest, since none of the three modes is individually premium; the value lives in choosing whichever the game asks for. The tap ability is the least discussed and the most quietly relevant: at three mana plus a tap it is slow, but on a vigilant attacker it doubles as a Falter effect that clears a path turn after turn, tapping the one blocker that would have stopped the swing while the equipped creature keeps hitting.