Quote Originally Posted by schm0 View Post
It does not "bestow an aura". It creates "spirits" that "flit around" the caster. This magical effect does not reside on the caster at all.
It moves with the caster, so no, your assessment is incorrect.
It functions as an aura with those two properties, whirling around the cleric even if he/she moves, with a 15' radius for 10 minutes, or until concentration is broken.