Added to Homebrews.
Prismatic spray is awfully powerful, so I'd recommend reducing it to at most 3/day, and probably even to 1/day.
Absolutely! As Demiurge pointed out (far) upthread, the standard unicorn is a bit under-CRed as it is.
Updated.
Organization: Solitary, pair, or x (3–6) [Didn't Cleon have a benevolent-sounding name that didn't work earlier, that may fit here?]
Challenge Rating 3 seems too low. They've got a couple of decent damage dealing spells, powerful charge and are generally tougher in a fight.
Up them to CR4?
Giving them prismatic spray seems awfully powerful full stop. I'm thinking we should change it to some lower level light-based attack spell or spells.
I'm thinking color spray 5/day plus searing light 1/day, both at CL11.
Wasn't it was your own idea that I didn't think worked for the pyrocorn?
It'll suit the Pinto nicely though:
Organization: Solitary, pair, or blaze (3–6)
We've been sticking to "grace" for the good-aligned ones, I think. Cleon had wanted to use that for the neutral grays, but we went with "herd" for them.
Edit: Interestingly, the neutrals are both herds, and the goods are all graces, but we have unique names for the evils (pyrocorns are an inferno, dark unicorns are a malice, and palominos are a chill). Do we want to go back and make groups of the evil ones all be "malices"?