Black Beast

Mutate {1}{b}{r}
Black Beast enters the battlefield with 2 health counters on it
Whenever this creature mutates, put 1 health
counter on it if it has less than 2 health counters
When this creature would be destroyed, remove
a health counter and regenerate it
If this creature has no health counters, it has
+2/+4 and trample
This creature does not regenerate toughness at
the end of any turn