This token is a gift from Daedalus, a reminder of how you helped him by recovering the Tabula Scutum, a stolen artifact of great power, in an adventure you've come to call:
You tracked Ghost Widow through time and prevented the Tabula from being sent to the Rogue Isles. Your service to Daedalus didn't stop there; you fought side-by-side with him to clear out the caves where the artifact's shrine was and then restored the Tabula to power.
Without your help, the Tabula would have been lost to Cimerora forever. Now Daedalus can once again draw upon this power source in his fight against the fell Nictus.