I averaging 118 damage using Firebolt against Young Brown-Tailed Mongooses. I'm using a fully upgraded Crystal Lightning wand (-35% magic damage). It's overupgraded with blue stones as well (+9 magic damage). My magic attack is 27.
Firebolt's base damage is 120... how do these stats produce 118's?
With 34 magic attack (Claudius persona) my highest is 125.
with 49 magic attack (Claudius persona+trans) my highest is 139.
It doesn't seem like magic attack compounds with bolt magic base damage...
Can you come up with a formula?
Edit: Fire Mastery is rank F.