Eh, I'll look at it. Honestly I just took Son of Alagondar for the skills. I've never even remembered that I give you guys a +1 bonus when I'm flanking with you.
(Incidentally, for fun I created a character that more than doubles Val's Insight... 8 levels earlier. Traveler's Insight is the best thing.)
Yeah, Infernal Slave functions as one hell of a meaty damage boost for you. Using it off a shock spiral, that's mods again, then something like 50 damage minimum off the Lightning Field, so about 80-100 damage depending on the dice.
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Twostuck, Homestuck RPG: http://www.gamefaqs.com/boards/8-gamefaqs-contests/62168402