Etheric Victory
Quest reward from Defeating Ky'veza. Like at the start of S2, it appears some people have this already learned in their toybox, I have it somehow and I don't know why or how.
The 
Etheric Victory is a toy rewarded from the quest Defeating Ky'veza, obtained by defeating Ky'veza in the Nemesis Delve during The War Within Season 3.
Guide awaiting review
Pick Up the Quest
Before attempting the Nemesis Delve, pick up the quest Defeating Ky'veza from Brann Bronzebeard at the Delver's Headquarters in Dornogal.
Enter the Nemesis Delve
Head to the Voidrazor Sanctuary at 64.31, 78.58 and enter the Nemesis Delve to find and defeat Ky'veza.
Turn In for the Toy
After defeating Ky'veza, return to Brann Bronzebeard at the Delver's Headquarters in Dornogal to turn in the quest and claim Etheric Victory as your reward.
Tips
Some players found Etheric Victory already learned in their toybox at the start of the season due to a bug — if it is already in your toybox, you do not need to complete the quest.
