Tested with just this and the library mods and the spellblades don't appear to deal "magic" damage as defined by minecraft: ie damage that ignores armor. Setting up a custom trigger to detect when "magic" damage is dealt resulted in no trigger. Not sure if this is intentional or an oversight, but I've seen a few other mods with curios dependency (such as Undead Unleashed) run into this same problem, so it could be an issue in that area.

After some testing and technical help, I'm pretty sure the issue is caused by minecraft's damage system labeling it as melee damage, overwriting the magical damage tag. This is fixable by having the sword dealing it's nonmagical damage up front, then applying an event that deals the magical damage afterwards as an effect inflicted on the mob.

Really love the style of the mod, brings some ancient feeling items to minecraft with some really rustic and stylish textures.