Turn your wayback machines to August. When I was a newb in Newland forest I saw an event a couple of times which no one ever explained to me.
A huge bright light, like a nuclear explosion without sound, would spread across the land, filling the earth and sky. You could see it approach, then it would envelope you, you would be surrounded by bright light, nothing visible, but the light. It did no damage and it did not heal. After 10 seconds or so it would pass over you and you could watch it recede into the distance.
What was that? Something related to notum energy? I experienced it at least 3 times. No, I do not have a seizure disorder and I am not on drugs.