Delphus, Muse of Curiosity

When Delphus, Muse of Curiosity enters the battlefield draw a card, then discard a card. Then if there are five or more instants, sorceries, or enchantments in your graveyard, exile Delphus, Muse of Curiosity, then return her to the battlefield transformed under her owner's control.
Discard a card: Return Delphus, Muse of Curiosity to it's owner's hand.