Etheric Light

"A volatile synthesis of energized matter and self-modifying energy constructs."

- In-game description

Etheric Light is an end-game upgrade material used to upgrade any Year One Legendary equipment to the maximum Attack or Defense levels for Year One. It can also be given to Petra Venj at the Vestian Outpost for Reputation.

How to obtain
Etheric Light can be obtained through a variety of methods:
 * Complete the Prison of Elders level 34 and 35 challenges (guaranteed)
 * Obtained from chests in the Vault of Glass Raid.

Trivia

 * Etheric means multiple things; one possible definition is a substance pertaining to the upper regions of space, or the heavens. Another is the theoretical substance that occupies all space, used to explain electromagnetic radiation but later disproven with the existence of photons.