Magic Forums

So recently I posted a question about my being able to form thread like lines of shadow between my fingers. I was told it could be psi energy, but does anyone have any ideas of what else it could be?

In a slightly dim room, I focus my energy to my fingers, I feel an electric like tingle, and when I separate them I have a dark shadowy line between them. Doing it often fatigues me, so it's difficult to experiment with, but forming threads is easier than a ball. I get slight tingle and pressure on any finger I touch it with, so there is something there..

Does anyone have any other ideas?