Magic: The Gathering Comprehensive Rules Changes - Core Set - Ninth Edition to Ravnica: City of Guilds

Old rule (Core Set - Ninth Edition)	New rule (Ravnica: City of Guilds)
Unattach [Click to view all changes.]
Unattach An Aura or Equipment becomes unattached if it was attached to a creature and then is not. If an Aura or Equipment leaves play while attached to a creature, it becomes unattached. If a creature leaves play while an Aura or Equipment is attached to it, the Aura or Equipment becomes unattached.	Unattach An Aura or Equipment becomes unattached if it was attached to a permanent and then is not. If an Aura or Equipment leaves play while attached to a permanent, it becomes unattached. If a permanent leaves play (unless it phases out) while an Aura or Equipment is attached to it, the Aura or Equipment becomes unattached.

Old rule (Core Set - Ninth Edition)

New rule (Ravnica: City of Guilds)

Unattach

An Aura or Equipment becomes unattached if it was attached to a creature and then is not. If an Aura or Equipment leaves play while attached to a creature, it becomes unattached. If a creature leaves play while an Aura or Equipment is attached to it, the Aura or Equipment becomes unattached.

Unattach

An Aura or Equipment becomes unattached if it was attached to a permanent and then is not. If an Aura or Equipment leaves play while attached to a permanent, it becomes unattached. If a permanent leaves play (unless it phases out) while an Aura or Equipment is attached to it, the Aura or Equipment becomes unattached.