Domineer

Mind Control with a metal restriction. The classic Control Magic line steals anything that fits the printed condition; this one narrows the target to artifact creatures, which on a world where nearly every body was forged from metal amounted to less a restriction than a thematic shrug. The narrowing is the whole tension: an environment where almost all creatures are artifacts turns "enchant artifact creature" into something close to "enchant creature," so the design buys back power by tying the Aura's reach to the set's mechanical identity rather than to a per-game probability. Outside that environment the clause bites hard, leaving the spell nothing to point at against a board of flesh, and that friction is precisely what justified printing a permanent, no-strings steal at three mana when the unconditional version had long sat higher on the curve or carried an upkeep tax. As an Aura it inherits the standard liability of the form: bounce or destroy the enchantment and the creature returns home, a built-in escape hatch that has kept theft-by-Aura honest since Alpha. The card is interesting for how literally it reads its home set, a removal-and-steal effect that only functions because the world it shipped in decided everything worth controlling was made of metal.