This is an armor item "token" intended to provide the wearer with a specific scripted effect:
This script runs on an unplayable token in Legion Explorers' inventory. I place this GameMode code in an item so as not to run the script on the Actor entity.
The token merely kicks in a timer that, when appropriate, makes the Legion Explorer's reference cast on itself (CIOS) an AOE, touch based, spell. This AOE spell is responsible for applying the "aura" effects on nearby Legion allies.”— Jorge, from the comments on the script
This item is non-player character only and cannot be obtained by the Courier.