You used to be able to do this when you used Possess Pet or whatever, which is now known as Flash cast. When you press C and go to the Pets section, there appears to be an old bar for spells, but nothing is there. Why is this?
cause they couldn't show them reflecting stats correctly. design decision vs fixing it, per dev comment and this way don't have to fix the actual problems with them cause ppl can't see them to complain. like dots overwriting themselves