XO said:
If brillant-energy ignores any non-living material, would it not ignore dragon scales ? Presuming such to be horn / nail type material, that is DEAD material as opposed to living !
So is horn (with some bony exceptions), nail, hair, hoof, etc...
According to the game producers, the "passes through non-living matter" clause is purely a flavor description. In game mechanics, it ignores Armor Bonuses and Shield Bonuses, and nothing else. For this game-mechanic reason, it even ignores Bracers of Armor, even though there's no other game reason it should.
I posted a topic about this a few months back. The way it is, Brilliant Energy is NOT worth the cost, no matter what- unless you routinely fight humanoid enemies in enchanted Full Plate and Tower Shields- which, if you do, something's wrong with your DM. Against monsters, monks, or casters, it's no more useful than if you didn't have it. Against undead or constructs (or bashing down a door, or sundering, or anything along those lines), it's WORSE than if you didn't have the enchantment- no matter what, your weapon is WORTHLESS against those kinds of opponents, and there's NOTHING you can do about it. Even if you have a Merciful weapon, you can turn it off. A Holy weapon against a good foe simply provides no bonus, but other enchantments apply. Brilliant Energy, however, makes your weapon useless, regardless of its other enchantments or prior composition, and there's nothing you can do to fix it.
Like I said, it's only worth the +4 in extremely limited situations. One fix I've found is to either lower the enchantment bonus to a +3 (and make it turn-off-able), or to instead have it strike as an incorporeal touch- it would bypass armor, natural armor, and shield bonuses, but wouldn't get past Ghost Touch armor or Bracers of Armor (or any other force effect, such as a Wall of Force of a Mage Armor spell). Otherwise, it's useless. Honestly.