[Shade Kerrin]

One thing I have to note is the 13th level anti-illusion feature. While it is a nice ability, it falls into the field of absolutes that plague D&D(Freedom of movement vs grapplers, normal illusions vs True Seeing)

Somewhat similar abilities may be gained via a feat(Insidious Casting, FRCS), or via 3 levels in a PrC(Wizard of High Sorcery, DRCS, IIRC). In both examples, however, they force a CL that would by default have a 50/50 success rate from an equally powerful opponent(And since both parties are equally capable of pumping CL, it typically remains that way), which would probably be a fairer approach to the ability.