Lords of the Abyssal Council can only be summoned through the greater wind stones, and only the top ranking members of the Twilight's Council may speak to them.  But... I have found a way to upgrade your disguise and fool the Abyssal Lords!$B$BThe disguise calls for a ring of lordship, worn only by the highest members of the cult.  I will craft one for you if you can bring me large brilliant shards and abyssal signets.