Adrianna, Queenmaker

Adrianna, Queenmaker enters the battlefield
under an opponent's control.
{t}: Add {c}{c}{c}. If this mana is spent to cast a
spell, Adrianna, Queenmaker's owner copies it
(and may choose new targets for the copy).
If you and Adrianna, Queenmaker's owner are
the last two players remaining in the game, you
both win the game.