If you're resistant to whatever the Hide grants you resistance to, you don't get a rebuff. I'm not sure if this is by design or if it should be something different. That's up to you guys, I just report 'em! :-D

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wear blue

You stop using a handsewn blouse of violet silk, low-cut and short.
You wear the hide of the Ancient Blue Dragon on your body.
You feel resistant to lightning.

: remove blue

You are no longer resistant to lightning.
You stop using the hide of the Ancient Blue Dragon.

: co 'resist l

You close your eyes and concentrate for a moment.
You become resistant to lightning.

: wear hide

You wear the hide of the Ancient Blue Dragon on your body.

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Zekasiq