There are some stealable powers that you can get with Mirror Stance that have character specific battle text, such as Drider Queen's Prime Target, and using those powers leads to immersion breaking battle descriptions. These powers also have a unique name in the save file: {"key":"MatihaFireball"}. I have found so far: Drider Queen's Prime Target, Imp's Dirty Trick, Jen's Execute, Jen's Thunder Strike, Matiha's Fireball and Maria's Vile Miasma to have different text, but there are probably others.