The Discord of Melkor

Split Second.
Each player removes cards from the top of their library into exile until they reveal twenty lands,
then each player loses half their life total,
rounded down, then each player sacrifices each
nonland permanents they control, then each
player draws seven cards.
''Then the discord of Melkor spread ever wider, and
the melodies which had been heard before foundered in
a sea of turbulent sound.''