[3.5] The way of the Illusionist?

[Yael]

I'm looking after the build for an Illusionist gnome, but I'm on the need of feats, class features and spells~~ Any help?

[Waker]

Shadowcraft Mage and Shadowcrafter are both popular choices. Nightmare Spinner and Dread Witch can work too if you don't ban Enchantment. The UA Illusion variant is useful, specifically the Chains of Disbelief ability.

[gorfnab]

Shadowcraft Mage Handbook (http://brilliantgameologists.com/boards/index.php?PHPSESSID=2fg74gcj6vjhb4na2ir7nji524&topic=5638.0)
Shadowcraft Mage Spellbook (http://www.minmaxboards.com/index.php?topic=714.0)

[Gem]

A dip in Shadow Adept can also be very much worth it for those three bonus feats.