Alan, Scion of Unmaking

{u}{b}{r}{g} Sacrifice a permanent: Target Player
reveals the top 3 cards of their deck. Pick a
permanent and put it into the Battlefield tapped.
If at the end of your turn you control 3 or more
permanents owned by other players Exile
Alan, Scion of Unmaking and return him to the
battlefield transformed under his owners control.