Change practice tool dummies to have 50 flat armour 50 bonus armour?
Trying to figure out the damage calculations when mortal rem. is thrown into the mix is impossible to do with the dummies in practice mode. The only other way is to fight Ai and pray they a) actually last hit minions and b) rush armour not health. Even then the armour will be so low if you're off by a little you might not know. I'm guessing the % pen is applied to the bonus armour then the flat pen is applied, but I can't really prove it. Plus I'd need the AI to hit level 18 or else have to work with the tomfuckery that is lethality scaling.