If a battle or creature is attached to an object or player, it becomes unattached and remains on the battlefield. Similarly, if any nonbattle, noncreature permanent that’s neither an Aura, an Equipment, nor a Fortification is attached to an object or player, it becomes unattached and remains on the battlefield.
May 3, 2019 · War of the Spark
If a creature is attached to an object or player, it becomes unattached and remains on the battlefield. Similarly, if a permanent that’s neither an Aura, an Equipment, nor a Fortification is attached to an object or player, it becomes unattached and remains on the battlefield.
January 25, 2019 · Ravnica Allegiance
If a creature is attached to an object or player, it becomes unattached and remains on the battlefield. Similarly, if a permanent that's neither an Aura, an Equipment, nor a Fortification is attached to an object or player, it becomes unattached and remains on the battlefield.
September 29, 2017 · Ixalan
If a creature is attached to an object or player, it becomes unattached and remains on the battlefield. Similarly, if a permanent that’s neither an Aura, an Equipment, nor a Fortification is attached to an object or player, it becomes unattached and remains on the battlefield.
September 30, 2011 · Innistrad
If an Equipment or Fortification is attached to an illegal permanent, it becomes unattached from that permanent. It remains on the battlefield.
June 17, 2011 · Commander 2011
If an Equipment or Fortification is attached to an illegal permanent, it becomes unattached
February 4, 2011 · Mirrodin Besieged
If an Equipment or Fortification is attached to an illegal permanent, it becomes unattached from that permanent. It remains on the battlefield.
October 1, 2010 · Scars of Mirrodin
If an Equipment or Fortification is attached to an illegal permanent, it becomes unattached
February 1, 2010 · Worldwake
If an Equipment or Fortification is attached to an illegal permanent, it becomes unattached from that permanent. It remains on the battlefield.