If I'm reading this spell correctly, any critter within 10m loses invisibilty and concealment w/o save or regard to spell resistance. It's duration of 1 turn/lvl implies that anyone entering that radius during the duration is stripped of those effects also (including allies).

Is that correct? Does it also affect HIPS?

... No, because HIPS is not invisibility.

Question answered, locked, RTFW, also build topic.

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Davion Telemos - Monk of the Four Winds
Korthan Isharnos - Dragon Shaman of Thunder Spirit Zamasham