Kamikaze Midget said:
... then it punches holes in by book-valid interpretation...
If you interpret "evil creature" as "creature with the Evil descriptor", though, you end up with some oddities.
Holy: A holy weapon is imbued with holy power. This power makes the weapon good-aligned and thus bypasses the corresponding damage reduction. It deals an extra 2d6 points of damage against all of evil alignment.
It bestows one negative level on any evil creature attempting to wield it. The negative level remains as long as the weapon is in hand and disappears when the weapon is no longer wielded. This negative level never results in actual level loss, but it cannot be overcome in any way (including restoration spells) while the weapon is wielded. Bows, crossbows, and slings so crafted bestow the holy power upon their ammunition.
-- So a deliciously Chaotic Evil Ftr-20 who boils puppies alive and kicks kittens for fun - but who doesn't have the [Evil] descriptor - can use a Holy longsword with no ill effects?
Holy Aura
Abjuration [Good]
Level: Clr 8, Good 8
A brilliant divine radiance surrounds the subjects, protecting them from attacks, granting them resistance to
spells cast by evil creatures, and causing
evil creatures to become blinded when they strike the subjects.
-- But no SR against the LE Wiz-20, and his horde of hobgoblin mercenaries can strike you without fear of being blinded... no [Evil] descriptor.
Holy Smite
Evocation [Good]
Level: Good 4
You draw down holy power to smite your enemies. Only
evil and neutral creatures are harmed by the spell; good creatures are unaffected.
The spell deals 1d8 points of damage per two caster levels (maximum 5d8)
to each evil creature in the area (or 1d6 points of damage per caster level, maximum 10d6, to an evil outsider) and causes it to become blinded for 1 round. A successful Will saving throw reduces damage to half and negates the blinded effect.
-- Wait a moment... "neutral creatures"? Creatures with the [Neutral] descriptor? Bizarre. But at least the hobgoblin mercenaries take no damage from the Holy Smite.
Holy Word
Evocation [Good, Sonic]
Level: Clr 7, Good 7
Any
nongood creature within the area that hears the holy word suffers the following ill effects.
-- Ooh... nongood creatures. "Creatures without the [Good] descriptor", presumably. Which would include... well, most of the party. Any party. Makes Holy Word a very dangerous spell...
And then there's the White Robe of the Archmagi, which has a weird effect on "evil characters" - is that different to "evil creatures"?
Or Holy Sword, which makes a weapon do more damage against "evil opponents". "Opponents with the [Evil] descriptor"?
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Or we could assume that "evil creature" means "creature with an evil alignment", like the FAQ says, and all of those weirdnesses go away.
-Hyp.