Vulkorth, the Fire Tyrant

Flying, menace
Whenever Vulkorth attacks, you may sacrifice a creature. If you do, Vulkorth does damage
equal to the sacrificed creature's converted mana
cost to any target.
{r}{r}{r}, tap up to three red creatures you control:
For each red creature you tapped, choose a
creature. Vulkorth deals damage to the chosen creatures equal to the number of
cards in your graveyard.