I can't imagine someone firebolting a creature with this armor on purpose...that'd just be silly. Although, with the AI, sometimes I wonder...
EDIT: right, scratch that, firebolt your own creatures...hmm...I'd hoped there'd be another way around that. I wasn't 100% on the doubled mechanic for the upgrade, but wanted it to be somewhat different than the un-upped. Possibly a
-generating effect of some sort?