Voidkeeper

{w}{u}: Exile Voidkeeper. It gains "You may cast Voidkeeper from exile."
{t}, Exile another non- Spirit permanent you
control with a mana cost X: You may play target
card in exile with a converted mana X or less for {0} and as though it were in your hand.
"Permanency is a transitory concept for those bound
to the nether." - Voidkeeper