From Pathfinder Lost Omens Impossible Lands, which isn't enabled.

Visap

ITEM 0

UNCOMMON AGILE FINESSE INJECTION VERSATILE-P VISHKANYA

Price 2 gp

Usage held in 1 hand

Bulk L

Category advanced

Group knife

Damage 1d4 slashing

Two small, curved blades extend from a single hilt. There's a hollow area inside that vishkanyas can use to store an unused dose of their blood, or other poison, for the future.

Pathfinder Lost Omens Impossible LandsOGL