Brood X certainly has wings, and they fly like they’re drunk, but I wouldn’t call them immortal.
Literally: wing – change – climb – hermit
Alternately: Feeling as if one has grown wings and ascended into the skies… often as a result of alcohol. Tipsy, or buzzed, whether from some felicitous life event… or just drink.
This is a fanciful compound of compounds. 羽化 is literally the growing of wings, but can also refer to an insect molting into its (winged) adult form from a nymph or pupa. 登仙 is “ascending” to the status of a Taoist-style “immortal” or “hermit” – a holy person (human or non-) associated with certain spiritual practices and supernatural abilities.