Both. This is kind of a simplification, but imagine if when you looked at someone the right way, you saw a glow around them. The brightness told you how powerful they were, and the color gave you details about them as a person, what their soul was like. When I looked at Calice, it was like looking at a tangled mix of colors that was so intense that I couldn't focus on it closely enough to see how those colors were knotted together even if I thought it would've done any good.