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From Pathfinder Rage of Elements, which isn't enabled.

Sairazul Blue

ITEM 10
Price 180 gp
Usage held in 1 hand
Bulk L
Category potion

Activate (manipulate)

A Sairazul blue potion is a rich navy blue in color. Subjects of the Crystalline Queen produced the potion to protect themselves from the radiation Ayrzul left behind. For the next 8 hours, your skin becomes navy blue, and you gain resistance 5 to poison damage and void damage.

Effect: Sairazul Blue

If you drop to 0 Hit Points due to poison or void damage, the Sairazul blue within your body reacts, healing you for 8d8 healing Hit Points. The resistances the potion grants then end.

Pathfinder Rage of ElementsOGL