Obelas, or the Bright One, is a fallen star.
Obelas is a glowing winged figure. Their light, bright but not blinding, does not seem to illuminate anything around it. Their face seems carved but unfinished, "like the faces of Mount Rushmore, in that the task of making this thing's face was so big that you could only ever get pretty close".
They wear robes of a bright yellow that are hard to distinguish from their flesh and hold a scroll which seems to be of infinite length, with no visible beginning or end.