i dont know “Fire mages” but from my point of view Breath of the Dying will not help to get more DPS.
The only two item you have with a bit more corruption are :
- Eyestalk of Il’gynoth
- Vile Manipulator’s Wristwraps
The first one you have no off hand to use it with and if you equip it it will bring you to 70 corruption wich the BiB can’t do because the limit you set him up is “39” (even with the -10 from the Breath of Dying)
If you want less corruption you will need to take down this parameter :
About the two trinket i have to let @swol solv it because i dont understand why BiB doesn’t take them. Probably a bug in the matrix.