Mowu, Fierce Protector

Vigilance, Reach, Trample
Whenever Mowu, Fierce Protector would block
or become blocked by another creature while you
control a planeswalker, put a +1/+1 counter on
Mowu, Fierce Protector.
Mowu, Fierce Protector may block an additional creature each combat for each
+1/+1 counter on it.