Umao, Lone Critter

Haste, exalted (Umao, Lone Critter gets +1/+1 as
long as he attacks alone.)
Umao, Lone Critter gets -1/-1 if you control any
other creatures unless those creatures are
Squirrels, in which case, he gets -2/+1.
After too many wars, he became hostile in his late
age, hating everything but his kin, which he disliked.