Text (5th+errata): {4},{Tap}: Attach target Aura attached to a creature to another creature. [Oracle 2005/08/01]
Can move any enchantment on a creature to another valid creature target. Mostly this refers to enchant creature cards, but enchant artifact cards on an artifact creature or enchant land cards on a land creature could also be moved to legal targets. [D'Angelo 1995/06/23]
Only targets the enchantment and not either creature. [Aahz 1995/07/09] This is means it can move enchantments onto a creature which cannot normally be targeted by spells and abilities if the enchantment is legal on that target.
The enchantment's new target must be legal. [D'Angelo 1999/01/14]
