Eidolon is the Spirit of Inspiration, an ephemeral being embodied from shimmering golden dust. He can take on human form for ease of communication with people.

Eidolon is called upon when the creative spark in a person goes out. To do this, you need to find a secluded place where a person feels calm and free. It is necessary to light a candle made of natural wax, and, looking at its flame, whisper the following words:

"Oh, Eidolon, Spirit of Inspiration, hear my call. My heart went cold and my thoughts froze. Please revive my spirit, give me back the thirst to create. I promise to be faithful to your gift and bring it to the world."

[From Itch.io]