That's just a wisp, they can spawn near nodes, the only naturally occurring wisp spawners are in the little eldritch stone circles with chests afaik. There are the Automagy obsidian nether towers as well but those are hellwisps and not wisps iirc.
Yep, I know who's that
however no nodes nearby, and no eldritch stone circles with chest
also this guy didn't attack me right away, even though I was running around him for a while
so probably they spawn in caverns in Magical Forests?
edit: speaking about magic. I want to throw in 1 more mod - ars magica.
I don't know almost anything about it, and I want to lock it up behind MV machinery.
Anybody knows of existing good Modtweaker scripts for that? Any ArsMagica expert to help me to choose "first" steps of mod to be locked up?
My idea is to put Runes behind MV Laser Engraver, Chimerite behind MV autoclave (chimerite = molten thaumium + ender dust probably or something), Vinteum behind Chemical Reactor (molten thaumium + something, no idea). Seems fine?