User blog comment:Cass delau/Abnormal activation abilities/@comment-38504801-20190602021035/@comment-1917722-20190602182019

There's been bits of explanation left and right, I guess. Off the top of my head there's stuff about aura, 'schools of magic' (unfinished/not being worked on but it's there), transformations of various kinds, 'Limit Seeing' and other things.