Grixheil, Eternal Horror

Grixheil, Eternal Horror enters the battlefield
with 3 -1/-1 counters.
When Grixheil, Eternal Horror or another
horror enters the battlefield under your control,
put a -1/-1 counter on each other creature.
Creatures you control with -1/-1 counters have deathtouch, hexproof, and indestructable.