Pestilence, Plague Incarnate

First strike, deathtouch
Pestilence, Plague Incarnate can't block
When Pestilence, Plague Incarnate enters the battlefield, each opponent sacrifices a creature.
Whenever a creature an opponent controls dies,
each opponent loses 1 life and you gain 1 life.
"Say goodbye to all your puny little lives, peasants,
as my plague will spread across you all!"