I find it surprising the Illumian can have so many boons yet no drawbacks such as Level Adjustment. The only negative I note is a -4 to saves versus glyph/rune/sigil/symbol spells, and that's only if your Lvl is lower than the CL of the spell, otherwise you're immune. It seems a bit overpowered, but what the heck, a lot of fun with all the customizing options. Will need to consider looking in-depth into the book when I finally break from the Core books of 3.5 (along with all the other books I have).