Any Aura card you find must be able to enchant Auratouched Mage as it currently exists, or as it most recently existed on the battlefield if it’s no longer on the battlefield. If an effect has made the Mage an artifact, for example, you could search for an Aura with “enchant artifact.”
When this creature enters, search your library for an Aura card that could enchant it. If this creature is still on the battlefield, put that Aura card onto the battlefield attached to it. Otherwise, reveal the Aura card and put it into your hand. Then shuffle.
