Grimnath, the Infernous

Other Demons, Devils, and Imps you control get
+1/+1.
Whenever another Demon, Devil, or Imp creature
you control dies, Grimnath, the Infernous deals
damage equal to the number of total Demons, Devils, and Imps in your graveyard to target creature or player.
{2}{b/r}{b/r}, Sacrifice a Demon, Devil, or Imp creature
you control: Discard a card, then Draw a card.