Okay so i created my own mod in accordance with the modding guide. I Wanted to change the conjure primal spirit skill. I copied the original dbr file, changed it, built my mod, loaded up GD, no change what so ever. Tried the same for Savagery. increased its manacost to 250 just to see an effect. nothing. Savagery still cost only 1 mana, not 250 and primal spirit wasnt changed either. Save to say modding doesnt work, like, at all
that should help
http://www.grimdawn.com/forums/showthread.php?t=37620
I think we need some kind of sticky tutorial/solved issue collection 
Since it wasn’t mentioned…did you select Custom Game/Your Mod in the main menu of Grim Dawn?
Working on one warebear…