Divine favor says that the extra damage is ‘weapon damage’. So I think it works with savage attacker and gwf (dm agrees). I know normally gwf is considered ‘bad’; but I think with the 3 dice it’s pretty ok for me. But it stinks that savage attacker gets even worse with gwf; especially given that it’s an origin feat.
My goal with the build is to find ways to get my maul to do as much damage as possible (I’m planning on great weapon master at level 4). But savage attacker really seems to be useless. I redid your calculation with divine favor, and it looks like savage attacker would only be adding .95 damage:
That’s true! With a great axe; savage attacker is pretty ok. I just wish the feat was more universally applicable. It also conflicts with gwf; because gwf is better with allot of small dice, while savage attacker is better with fewer large dice