Travel to Shattrath City to tell A'dal about Akama's request.
You might wonder why I go to such lengths to hide my intentions. Why not throw my lot in openly with the naaru?
My very essence - my soul - is held prisoner inside the Black Temple. Illidan could destroy me any moment... until now! This phylactery will allow me to regain control of my soul.
The time has come, <name>. I'll lead Maiev and my Deathsworn to Illidan's doorstep.
Speak to A'dal and and tell him of our plan. If we strike together we'll break through Illidan's defenses.
<A'dal's light surrounds you as he welcomes you back. You have a feeling he knows what you're about to ask of him.>