Magic: The Gathering Comprehensive Rules Changes - Planar Chaos to Future Sight

Old rule (Planar Chaos)	New rule (Future Sight)
Unattach [Click to view all changes.]
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.	Unattach An Aura, Equipment, or Fortification becomes unattached if it was attached to an object or player and then is not. If an Aura, Equipment, or Fortification leaves play while attached to an object, it becomes unattached. If a permanent leaves play (unless it phases out) while an Aura, Equipment, or Fortification is attached to it, the Aura, Equipment, or Fortification becomes unattached.

Old rule (Planar Chaos)

New rule (Future Sight)

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.

Unattach

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