
Masterkelso |
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That being said-- it sparkles because of the nature of the conjuration. It doesn't specifically say that Glitterdust is a *light source*. I believe the reason that it is a second level spell instead of a first level spell is because it is an AOE-- it covers all subjects within its area. After its created, it persists until the sheen and luster of it wears off, but the spell is not active, fluid or moving like faerie fire. Therefore, as a worn object, a second casting of invisibility would render it invisible. You are effectively expending a resource to force a caster or creature to expend its resource to go invisible again. Faerie fire, even though it is a lower level spell, is single target, evocation, specifically mentions that it is a light source, and persists to follow around a creature-- even if that creature goes invisible.
I know this is an old post, but it has come up twice in the last three weeks, so I wanted to clarify how I rule on the matter.