pf2e.fyi
From Pathfinder Treasure Vault (Remastered), which isn't enabled.

Vigilant Eye

ITEM 9
Price 650 gp
Usage affixed to armor or a weapon
Bulk —

Carved in this wooden disc is a humanoid eye, painted in muted shades that blend in with the wood. The eye's pupil continually twitches and moves, scanning its bearer's surroundings.

  • Armor (revelation) You aren't Off-Guard to Hidden or Undetected creatures of the eye's level or lower, or creatures of the eye's level or lower using surprise attack, though you can still be flanked.
  • Weapon When you make a Strike with the weapon against a target that's Concealed, hidden, or undetected, the DC of your flat check to target it is 4 if the target is concealed or 10 if it's hidden or undetected.
Activate Cast a Spell

Effect You cast Detect Magic.
Activate Cast a Spell
Frequency once per day

Effect You cast Web of Eyes.
Pathfinder Treasure Vault (Remastered)ORC