Shackles

Not a Pacifism but a freeze: the enchanted creature is denied its untap step, so any creature you catch tapped stays tapped indefinitely. The design wrinkle that separates this from a flat creature-disabler is the bounce clause. For a single white mana the controller can pick the Aura back up, which sounds like a drawback but is the whole point: it turns a permanent answer into a reusable, repositionable one. Catch an attacker after it swings, return the Aura to hand before your opponent commits the next threat, and replay it on whatever taps itself next turn. The same mana doubles as insurance against enchantment removal, letting the controller dodge a Disenchant by flickering the Aura home in response rather than eating a two-for-one. The catch is that the freeze only matters once a creature is already tapped: against an untapped threat it does nothing until that creature attacks, taps for an ability, or is otherwise turned sideways, and at that point you have to keep the Aura on it across untap steps to hold it down. That conditional timing is the friction that pays for the flexibility. It is a tempo tool dressed as removal, built for a white control shell that wants to neutralize the same problem repeatedly without spending a new card each time.