Torvac, Flameblight

When a creature enters the battlefield, each opponent sacrifices a creature.
When a creature you own dies, return target creature from an opponents graveyard to your battlefield, with a +1/+1 counter for each creature you control that you don't own.
When a creature you don't own dies, if you controlled it, each opponent loses life equal to the amount of +1/+1 counters on it.