[Battacor] already deals magnetic damage which is perfect to mod for other complex elements to have more elements to deal with profit taker.
As you will use Chroma to increase base damage you are dealing, so Serration is not needed in here.

Setup:
Chroma: https://overframe.gg/build/72798/chroma-prime/chroma-prime-for-profit-taker/
Tombfinger: https://overframe.gg/build/72791/tombfinger/rip-proft-taker/
Plague Kripath: https://overframe.gg/build/72793/plague-kripath/exodia-contagion-for-profit-taker/
Imperator Vandal: https://overframe.gg/build/72794/imperator-vandal/takedown-profit-takers-limbs/
Fast Travel Itzal: https://overframe.gg/build/72800/itzal/gas-gas-gas-itzal/