Upon attuning to the Ring of the Aetherlord, you have learned that the line between life and death is, for you, somewhat blurred. After some time exploring the powers of the ring, you discover what remains of the last Aetherlord's soul, and can begin learning what you can from him. Under the tutelage of Eldrin of Thulanthor, you can unlock a deeper understanding of the powers of the ring.

Should you lose attunement to the ring, you lose access to this Feat.