So I'm confused. My summoned is level 5 and I'm using an aquatic build. I have one natural attack on my eidolon. I took bite evolution twice(one free and one from the pool) I also have improved natural attack on it as well as the feat improved natural attack. So from 1d6 to 1d10? Also if my str mod is 4 what does the final result come out to be? If I only have bite it says 1.5 is the str mod but also bite twice says the same thing what is it.
