Drothma, The Lord of Tides

Flying, Double Strike, Trample, Myriad
At the beginning of your end step,
exile Drothma, The Lord of Tides. If
Drothma, The Lord of Tides is not exiled
in this way, you lose the game.
Whem Drothma, the Lord of Tides exits the
battlefield, your life total becomes 1.