Aether Creatures
The Aether Creatures is part of the Seasonal Content. Aether creatures only spawn when the comet is visible in the sky of New Britannia (which is several months per year real-life time, often May through September).
Aether creatures include
When Aether creatures were initially placed in the game in the Release 56, the release notes stated:
The comet that is rapidly approaching New Britannia has had an ever-increasing influence on the creatures of the world. In some cases it is merely increasing their power but in a few cases it is actually mutating them into new creatures altogether. Three new creatures have been spotted in Novia and the Hidden Vale: Aether Dragons, Aether Corpions, and Aether Liches. It is rumored that there are rare rewards for defeating these new creatures…[1]
Lore
Astronomers across New Britannia have noted that the approaching comet has agitated the creatures of Novia and Hidden Vale, making many bolder and more ferocious. Rumors suggest that the aether surrounding the comet has been mutating some of the most powerful creatures into new monstrous variations. Explorers of the world’s most dangerous regions are reporting sightings of Aether Dragons, Aether Corpions, and even Aether Liches! Woe be to any unwary Avatar who stumbles into their path![2]