Amulet of Aberrant Imperception

A rather plain looking silver chain with a modest eye-shaped pendant attached to it. This amulet is a tool used by Dimir Agents that wish to bypass the eternal sentinels that other guilds use to guard their precious secrets.

While wearing this amulet, once per day you can speak a command word to erase any indication that you are a living creature from the world. For one hour, you cannot be perceived by Fey, Fiends, Celestials or Undead. This effect ends early immediately after you make an attack roll, deal damage, or cast a spell. Additionally, the spell ends if any of the specified creature types move within five feet of you, as it disturbs the barrier between your aura and the world around you. 

You regain this ability after a long rest. 

(Effectively the Neutralize Aura spell from Grim Hollow once per day)

Notes: Utility, Jewelry, Dimir, Undead, Celestial, Fey, Fiend, Invisibility, Nondetection, Hide, Ravnica, Dimir Agent, Detection, Utility, Necklace