Likely a purple variation of the existing Nordrassil Wisp, and almost certainly a drop from Archimonde in the Battle for Mount Hyjal Raid.
*NOTE: The model viewer as of 6.1 is wrong. This is indeed a purple wisp variant, and not the glitchy blue mess the model viewer suggests.
If I get a million of these... Should I be able to solo Archimonde and other demonlords?
Indeed, I looted it from Archimonde, last boss in La Cima Hyjal. My second kill in 6.1.
Fuego fatuo de Hyjal turns into a Fuego fatuo de Hyjal and drops from Archimonde in the La Cima Hyjal Raid.
i test drop rate, i kill Archimonde 15 time and pet dro only one, I think that is not very high dropi.
it also shoots a seed on your location, which blossoms into a tree!
My GOD! Wish Protect is real.
If you wanna solo Archimonde in heroic, just bring three of these.