Forbidden Union

As an additional cost to cast this card, you must
choose an Angel creature and a Demon creature
you control. Sacrifice all other creatures you
control and add the total power and toughness
of the sacrificed creatures to both the chosen
creatures. The chosen creatures gain Flying, Hexproof, and Indestructible until the end of
the turn and must attack this turn if able. At the beginning of your next turn, you lose the game.