Thanos, The Equalizer

First Strike,Vigilance,Partner
{3}{w}{b}{g}{t}, Sacrifice Thanos, The Equalizer
Starting with you, each player
separates all permanents they control into
two piles. Then each player chooses one of their
piles at random and sacrifices those permanents.
(Piles can be empty.)
"What did it cost?" "Everything."