Consumable: Emperor Calus Token
Evidence of your worthiness in the eyes of Emperor Calus.
Obtained: From completing portions of the raid and collecting chests in the belly of the Leviathan using the keys you acquire in the raid.
Usage: Redeem with Benedict 99-40 in The Tower to increase Reputation. Handing 20 Emperor Calus Tokens to him will give you a legendary (purple) engram containing a piece of gear from the raid.