Duet of Badassery

Duet of Badassery can't be countered.
{x} is all permanents you control; As an
additional cost to play Duet of Badassery,
sacrifice all other cards in your hand.
Target opponent may join Duet of Badassery
and win the game in union with player if they
{t} all permanents they control and sacrifice all
cards in their hand. If they refuse, they lose
the game.