Variks tells you about Eramis, a new Kell of the Fallen, or the Eliksni, as they call themselves. Through communing with Pyramids, she has managed to harness the power of Darkness and use it as a weapon.
Variks escaped with proof of that Dark power, asking for help. If Eramis succeeds in giving this power to all of her Eliksni followers, nothing, not even the Guardians, will be able to defeat her.
Variks asks you to find Eramis immediately. Perhaps she can still be stopped.
Pursue Eramis, Kell of Darkness. Complete "The New Kell" mission.