Text (UD+errata): Return all enchantment cards from your graveyard to the battlefield. (Auras with nothing to enchant remain in your graveyard.) [Oracle 2009/07/08]
Auras can only be placed on permanents that were in play before this effect started to resolve. You cannot put an enchantment into play with and put an Aura that is also coming into play onto one of those enchantments. [D'Angelo 1999/06/01]
You must return Auras if possible, even if this means enchanting an opponent's permanent with a good enchantment. [Urza's Destiny FAQ 1999/05/25]
You choose where to place the Auras, and must choose a legal permanent for it to enchant. [DeLaney 1999/06/13]
It determines what enchantments to return when its resolution starts. If more enchantments go to the graveyard during the resolution (as with Heightened Awareness being put into play), those additional enchantments are ignored. [Prophecy FAQ 2000/05/25]
Legacy tournaments (see Rule 911) banned this card from 2004/09/20 to 2007/06/20.
Extended tournaments (see Rule 913) have banned this card since 2001/04/01.