Midir, Darkness Devourer

Flying, Trample, Deathtouch, Devour X
{p/b}{p/b}: Destroy target creature with mana value . 3 or less. Midir gets +X/+X where X was that creature's power until end of turn.
{6}{p/b}{p/b}{t}: Each opponent sacrifices a creature with the highest mana value they control, then mills twelve cards and lose 6 life.