Noxbane Monstrosity

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Infect (This creature deals damage to creatures in the
form of -1/-1 counters and to players in the form
of poison counters.)
Mutate 1 (If this creature would untap during your
untap step, you may instead put 1 +1/+1 counter on it.)