I think the damage bonus of the boots “Roots of Vithrasil” “while in spriggan form” don’t work.
I use two boots with different bonus but my damage is the same.
First
https://imgur.com/a/csnv4Z9
https://imgur.com/a/aGHsYBO
Second
https://imgur.com/a/X9YRloV
https://imgur.com/a/DBYPqyD
Thanks