Magic: The Gathering Comprehensive Rules Changes - Eventide to Shards of Alara

Old rule (Eventide)	New rule (Shards of Alara)
212.4k. [Click to view all changes.]
212.4k. If an effect attempts to attach an Aura in play to an object or player, that object or player must be able to be enchanted by it. If the object or player can't be, the Aura doesn't move.	212.4k. If an Aura is coming into play and there is no legal object or player for it to enchant, the Aura remains in its current zone, unless that zone is the stack. In that case, the Aura is put into its owner's graveyard instead of coming into play.

Old rule (Eventide)

New rule (Shards of Alara)

212.4k.

If an effect attempts to attach an Aura in play to an object or player, that object or player must be able to be enchanted by it. If the object or player can't be, the Aura doesn't move.

212.4k.

If an Aura is coming into play and there is no legal object or player for it to enchant, the Aura remains in its current zone, unless that zone is the stack. In that case, the Aura is put into its owner's graveyard instead of coming into play.