Can you help me find this fantasy novel title? (Details inside)

Sounds like the premise of 75% of fantasy novels written.

@Darth_Algar I will add more.

That a spirit of power overwhelmed a young woman and, they moved the spirit to a brain dead dragon because it could contain the great spirit that was in the girl.
Also they have three hero’s. One the reincarnation of an ancient god through his armor. Another is a great wizard who masters both minor and major magics. Third hero I can’t remember.
The villains are from another dimension, and are searching for gold. The general is ribbed on by the citizens for having gold trim on his armor. The emperor has a solid gold armor made.

https://www.loc.gov/rr/program/bib/lost/novels.html

Try the fiction/fantasy group and copy paste your paragraph description.

These people are in the business of locating titles of books that one had forgotten.
Good luck.