Hey, it would be really cool if you got more members of the third tier! It's not like you'd get too many in any case, what with the forced misfortune and all. The description change would be appropriate as things stand.
The Caelum thing: Seeing how ice is the very guiding element of the theme, and water is the path for ice, I'd think water magic rather essential for them. With spell casting encumberance at 12, as it's now, quickness isn't too good no matter what spell you spam. I never played Caelum, but the little bit of versatility that water gives looks rather important to enjoy using it. You could always remove the body slot to prevent switching to something more economical, as well as making them suspectible to lightning (is that possible?) to reduce their usefulness in wrathing purposes. (They need to carry lightning rods to balance themselves when flying or something
) Not that wrathing is a problem with so restrictive a path requirement. Heck, I'd almost rather see them dropped to A1W1 than losing the water... I might be in a minority, though, so maybe I'll just shut up. (But c'mon a glorified illusionist!)
Why not change the weapon to demonic gaze, then?
That would be more plausible to me. Or something obscure, like 'demonic juggle' or 'demonic trick.' Is there a special reason for staying with laughter?