Gruul Flameheart

When you take damage, choose one: Destroy
target artifact or enchantment, or Deal damage to
any target equal to the number of creatures you control.
{8}{r/g}{r/g}{r/g}: Deal damage to all creatures and planeswalkers target player controls equal
to 1/3 of the power of all the creatures
on your battlefield and in your graveyard,
rounded up. When Gruul Flameheart dies, each opponent loses life equal to the power of all creatures they control.