From Pathfinder #160: Assault on Hunting Lodge Seven, which isn't enabled.

Lifeblight Residue

ITEM 15

UNCOMMON CONSUMABLE DIVINE INJURY POISON VIRULENT

Price 1100 gp

Usage held in 2 hands

Bulk L

Category poison

Activate Interact

This black slime is carefully culled from coffins and sarcophagi used by the undead, and is then distilled and combined with necromantic energy, creating a dangerous sludge that leeches life force as aggressively as it rots flesh.

Saving Throw DC 35 Fortitude

Maximum Duration 6 rounds

Stage 1 5d6 void damage and 3d6 poison damage (1 round)

Stage 2 6d6 void damage and 4d6 poison damage (1 round)

Stage 3 7d6 void damage and 5d6 poison damage (1 round)

Craft Requirements Supply one casting of 8th-rank Harm.

Pathfinder #160: Assault on Hunting Lodge SevenOGL