Darion, Maestro of Chaos

Power and Toughness equal to total Power and Toughness of other Devils and Demons on your battlefield.
{r}{r}{1}: Place a 2/2 red and black Devil Demon
token named Cackler onto you battlefield.
{b}{3}: Sacrifice any number Devil or Demon you
control, each opponent takes damage equal to the
total power of creatures sacrificed this way.