Unknowable Truth

Devoid (This card has no color.)
Each player shuffles their hand into their library,
draws ten cards, then exiles their hand. For each
red or black card exiled this way, that player sacrifices a creature and Unknowable Truth
deals 1 damage to them. For each green card or
white exiled this way, that player exiles a nonland permanent they control. For each blue or
colorless card exiled this way, that player mills
three card and that player's opponents each
create a 3/3 colorless Horror