Aight, so I've looked up the +spell damage and healing formula on wowwiki, which says that ret aura, holy shield, and bosanc gain 5% of your +spell damage. Does this mean that for AoE grinding, I'm pretty much getting an extra 1 damage per 20 SD? Or, if I only have like 240 +SD, that's only like +12 damage? Am I missing something on exactly how it helps AoE grind?
Or is wowwiki wrong on the coefficients?