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From Pathfinder #146: Cult of Cinders, which isn't enabled.

Eclipse

ITEM 8
UNIQUEAGILEDEADLY-D6FINESSELIGHTMAGICALTHROWN-20VERSATILE-S
Price 450 gp
Usage held in 1 hand
Bulk L
Category martial
Group knife
Damage 1d4 piercing

This +1 Returning striking cold iron starknife has an ornate central grip that depicts a silver dragon, the neck, wings, and tail of which wrap over and around the handle in knots to support the weapon's four cold iron blades. While the handle is polished to a mirrorlike shine, the blades of Eclipse are a flat black and entirely unreflective. Eclipse is also the portal key required to activate Dreamgate at Alseta's Ring.

Whenever you score a critical hit with Eclipse, the target creature's eyes are plunged into darkness; if that creature doesn't have darkvision, it is blinded for 1 round.

Activate command
Frequency once per day
Effect Eclipse's blades glow like starlit night sky, causing it to shed light as a torch until you deactivate it as a single action, which has the concentrate trait.
Activate envision
Frequency three times per day
Trigger You attempt a Stealth check to Hide or Sneak, but you haven't rolled yet
Effect You absorb light, gaining a +2 status bonus to the Stealth check.
Pathfinder #146: Cult of CindersOGL