Fraz-Urb'luu, Lord of Lies

Flying
When Fraz-Urb'luu, Lord of Lies enters the battlefield, exile the top card of your library.
If it is a permanent, you may pay {x}, where {x} is the cards converted mana cost. Until the
end of your next turn, this card is a copy of the exiled permanent; except its name is
Fraz-Urb'luu, Lord of Lies, and it is still a creature in addition to its other types.
When Fraz-Urb'luu, Lord of Lies dies, you may play the exiled permanent, without
paying its mana cost.