Lassoed by the Law

White has a long tradition of temporary exile stapled to a body: Banisher Priest, Fiend Hunter, and their kin bind a permanent to a fragile creature so the opponent has a clock on getting their card back. This one moves the exile off a creature and onto an enchantment, which changes the answer profile entirely: instead of killing a 2/2 to break the lock, an opponent has to reach the enchantment itself, and the pool of cards that do that is narrower in most decks and stranger in composition. The temporary clause is still the price. Whatever you exile returns when this leaves, so it is removal that can be undone, not removal that ends the conversation. What lifts the design past a straight Oblivion Ring variant is the second trigger: the exile buys tempo, and the 1/1 Mercenary that arrives alongside it converts that tempo into pressure, pumping an attacker at sorcery speed to push extra damage while the opponent is a permanent down. Both triggers pull the same direction (get ahead, stay ahead) rather than hedging one against the other, which marks this as a card built for a deck that wants to be attacking, not one that wants to durdle behind a lockpiece.