Aether BA discord does a couple of runs each weekend from fragment farm runs to Ozma farm runs. A couple of new players got their mount last week.
If it adapted, you'd get 25% of a bar. But I'd recommend getting a party of 3 and killing Morbols during Blizzard. You'd spawn Cassie and that's a full light bar, you'd gain bright and brilliant light, snow sprites can mutate and give exploding light if you time their kills every 5 chains, and you won't have to run from one dragon to another due to the abundance of Morbols in that area.
