I failed to see this topic come up when searching, which means the answer might be totally obvious, but I have a question about Mirror Image and Hunter's Eye:
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Hunter's Eye: Level 3 Inquisitor Level 2 Ranger spell
Sharpening your perceptive abilities and tuning them against obfuscating effects, hunter’s eye greatly enhances your senses against the target creature. You gain the ability to perceive the target when it is invisible or ethereal as though using the see invisibility spell, and receive a +20 competence bonus on Perception checks to locate the target.
You ignore concealment provided by fog or mist, blur, displacement, invisibility, and similar effects affecting the target, but not concealment provided by darkness. This spell provides no benefits to your allies and no benefits against creatures other than the target.
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Mirror image is a little more familiar. It creates illusory duplicates. Ordinarily a "See Invisibility" spell would not allow you to see past mirror image because it's an illusion, but the second paragraph calls out concealment effects mentioning blur and displacement concealment and then saying it works against "similar effects." Is mirror image similar enough to displacement to say that Hunter's Eye would work against it?
My instinct is no it does not work against mirror images, because it doesn't ask you to roll concealment like the other spells mentioned. Additionally, I think that the spell would call out mirror images if that was RAI. If it does work it would also be extremely strong for ranged characters to damage down mages.
It's a little murky though and I was curious about your thoughts on it.
Good question, but I'd say no it doesn't work, and that's only because Hunter's Eye doesn't specifically call out being able to see through Illusions, but it does specifically call out Invisiblity, Etherealness and Concealment.
Mirror Images does not grant concealment, but rather it's a complicated illusion that is not affected by Perception checks, and Hunter's Eye isn't True Seeing (which does see through illusions).
I understand the "You ignore concealment provided by fog or mist, blur, displacement, invisibility, and similar effects affecting the target" does provide for a bit of leeway that is open to interpretation, but I would argue that should be read as "You ignore concealment provided by fog or mist, blur, displacement, invisibility, and similar effects affecting the target".
Agree with Ryze.
Mirror image is not a concealment, invisibility, or ethereal effect. Therefore hunter's eye has no benefit against it.
Thanks for the input! That's how I ruled it during our session last week, but it's nice to get some confirmation (phew!)
Rereading the spell, it's pretty useless against an already invisible target since you can't actually target them