Contracted Demon

You may reveal this card at any time. If this card
has been revealed, an opponent may cast it for
you from your hand at any time. When an
opponent casts Contracted Demon in this way,
you gain control of it and the opponent who
cast it gets an emblem with "You and
permanents you control have protection from Contracted Demon".
You may not pay mana to cast Contracted Demon.