Cured Ethereal Energy
Cured Ethereal Energy is one of the tougher materials to obtain for the PoP Elemental Armor quests. If you've done any of the Ornate Armor quests then you'll already know more or less how to make the Cured Ethereal Energy. You'll need two Ethereal Silk Swatches which are used in the Ornate PoP Armor Quests to make one of the Cured Ethereal Energys that we need.
Just as the Ethereal Silk Swatch, you'll need to do this combine in the Tanaan Loom which is found in the northwestern portion of the Plane of Knowledge. Also, just like with the Ethereal Silk Swatches you should be expecting a tailoring trivial in the 200s.
Cured Ethereal Energy
2 Ethereal Silk Swatch
1 Tanaan Embroidery Needle