I have a +4 longsword in Ininite Dungeons and I found a recipe for +6 attack bonus vs good. Will the attack bonuses stack if I add this recipe? Thanks!
I'm pretty sure they do not stack, no. It's because both of those qualities are an "enhancement bonus" that comes from the weapon, and bonuses of the same type do not stack.
You will always get what is highest, but never added together. Saves are the same way. So against good, +4 enchantment damage, +6 AB, against everything else, just +4 ench dam, +4 AB.
Comments
When it comes to attribute bonuses in NWN they stack, but in NWN 2 they don't.
I understand why only one bonus should stack as you can easily get +12 strength which is slightly broken.