Revel of the Cursed God

When a creature enters the battlefield under your control, you get a Revelry counter, then:
1-4 Revelry Counters: Deal 1 damage to any
target.
5-7 Revelry Counters: Each opponent sacrifices a creature.
8+ Revelry counters: Sacrifice this card. Destroy
all creatures. Each opponent loses 8 life.
This card can be your Commander.