Cleon
Legend
sqaarg is here
Armour Class should be 17, not 19.
There's an unsightly gap in the Description before the "There are unverified reports" paragraph.
Rest looks fine.
Hold on, I think Power Building could do with a rewording.
Now I read it again "The gray sqaarg increase its Might score by 5 or increase the Might score of another gray sqaarg by 5 by applying its own Strength to the sqaarg's Waxing Might" is really clunky.
How about:
Power Building. The sqaarg applies its +5 Strength modifier to a sqaarg's Waxing Might ability, either its own or another sqaarg within 5 feet. This increases the Might score by 5.