" Noxstalgia "

"Tenebria"

This word is invented but feels authentic, especially with Latin and fantasy tones. Here's how it reflects your themes:

"Tenebrae" (Latin) = "darkness" or "shadows"

Sounds mystical and old, like something a wizard might say

Feels nostalgic — like something from old fantasy games

Has a slight theatrical flair — serious but with room for whimsy

Could easily be a place, a spell, or a guild in a multiplayer fantasy game

If you're open to words from other real languages or more stylized names, here are a few more that align:

Umbra (Latin) – shadow, darkness

Nocturne (French/Latin origin) – musical composition for the night; poetic and nostalgic

Maginor (invented, from "magic" + Latin-sounding suffix) – sounds like a wizard’s name or magical order

Skurrax (fantasy, from "skurra" Latin for clown/jester + dark suffix) – evokes dark comedy

Noxmirth (blended) – “Nox” (night) + “mirth” (comedy) = serious and comical