Destroy the first set of Taken Blights in Exotic mission "The Whisper" on Legend difficulty.
Launch the mission from the "Into the Light" subscreen on your Director.
Eris Morn has a proposal to help you empower your rediscovered Whisper of the Worm.
She charges you with revisiting your investigation of the Taken anomaly beneath the surface of Io, and destroying the Blights you find there.