text: Any Aura card you find with Sovereigns of Lost Alara's second ability must be able to enchant the attacking creature as it currently exists. You need to check the Aura's enchant ability as well as any effects, such as protection, that would make it illegal to attach that Aura to the attacking creature. For example, if the attacking creature were an artifact creature with protection from blue, you could find an Aura with "enchant artifact," but you could not find a blue Aura.