Ikora Rey: The search to root out the Taken on Venus has led us to some dark places. None are darker than the heart of the Vex. If my information is correct, the blight now curls around the heart of their Citadel. This must not stand.
Ishtar Sink, Venus
Ikora Rey: The assault on the House of Wolves gave us detailed information about the Citadel spire. By all indications, the heart of the blight is there at the top of the tower. Good luck, Guardian. May your path through the Darkness lead you to the Light.
Guardian approaches Citadel
Ghost: The roots of the Citadel go deep into the heart of the planet. The spire is the metal trunk of a very, very big tree. Sort of.
Guardian fights off Taken army
Guardian enters lift
Ghost: Remember Skolas? Crazy Kell, angry Fallen? Can we go back to that? I prefer them to the Taken any day.
Guardian crosses chasm
Taken ambush Guardian
Ghost: They were trying to knock us off that platform! Oh, the Taken really are insufferable.
Guardian approaches blight atop the Citadel
Echo of Oryx spawns
Guardian retaliates, Echo of Oryx is killed
Ikora Rey: You sent Oryx screaming back to the Ascendant realm, and still his Echoes stain our system. That is why you are here, Guardian. Only you are strong enough to stand against the terrors in the night.