Protection from G-g-g-Ghosts!

[Protoman]

After several beatdowns suffered by these incorporeal pests recently in PFS, I was doing some reading to hopefully protect myself further than simply relying on force effects like mage armor and magic missile and ghost touch weapons.

All ghosts get Corrupting Touch which has been the bane of my characters' health as of late:

PRD - Ghost Entry wrote:

Corrupting Touch (Su): All ghosts gain this incorporeal touch attack. By passing part of its incorporeal body through a foe's body as a standard action, the ghost inflicts a number of d6s equal to its CR in damage. This damage is not negative energy—it manifests in the form of physical wounds and aches from supernatural aging. Creatures immune to magical aging are immune to this damage, but otherwise the damage bypasses all forms of damage reduction. A Fortitude save halves the damage inflicted.

Looking up magic items to help I ran across this nifty gem I'd usually overlook because of limited usefulness:

Seeker of Secrets wrote:

Nacreous Gray Sphere (normal)

Aura moderate abjuration; CL 12th
Slot none; Price 10,000 gp; Weight —
Description
This stone protects you from ability score penalties from aging and you cannot be magically aged. Any penalties you have already incurred remain in place. Bonuses still accrue, and you still die of old age when your time is up. If you lose the stone or its abilities are negated in some way, all age and penalties apply immediately.
Resonance
Miss chance against incorporeal creatures decreases to 25%.

While higher CR ghosts got other toys I'd have to get around but the damage of the corrupting touch is worth addressing now. However, before I fork over the extra 10k GP for one or two of my PFS characters, would wanna double-check with folks on the forums to make sure I'm not missing anything that such an item wouldn't make a regular humanoid character immune to a ghost's corrupting touch ability.

Everything look ok?

[Imbicatus]

It looks legal, but expect to have to explain it to the GM each time it comes up.

[Protoman]

I already have to do that with Blinded Blade Style or when playing a kineticist, what's one more confusing character? :D

[Avoron]

It seems perfectly fine, and not even very complicated. If immunity to magical aging wasn't supposed to protect you from Corrupting Touch, that line wouldn't be there in the first place.

[Protoman]

Excellent! With the new errata from UE and selling back some items for full price, I can afford this ioun stone a lot sooner than anticipated!

Thanks for the input!