Unyielding Horror

Unyielding Horror enters the battlefield with five
+1/+1 counters on it
If a source would deal damage to Unyielding
Horror, prevent that damage, remove a +1/+1
counter and create a 1/1 black ooze creature
token
Whenever a creature an opponent controls dies,
put a +1/+1 counter on Unyielding Horror