Alys Meena

True Neutral god of Arcane Magic and Academia. Her symbol is a rectangle with lines on it, surrounded by flames (symbolising paper and abjurative magic). She has no favored weapon, causing spiritual weapon to fail.
Alys rose to godhood sometime in the second age, finally perfecting a spell to enable her ascension. The spell has been lost to time, although her followers claim the spell is personal to each caster, and rooted in the abjuration school.
She watches over scholars and sages, supporting their work (so long as they're researching arcane magic) and also favors bold adventurers and explorers (provided they cast a lot of arcane magic). Alys is not exactly insane but more single minded in her focus, with a slight emphasis on abjurative magic; magic that works on other magic is clearly her favorite. Magic for it's own sake lands her smack bang in the middle of True Neutral, although she does have a few Lawful Neutral and Neutral Good churches that pay respect to her.
So why's she not worshiped in the valley? The valley has always favored clerical magic over arcane, and needs gods with a little more omph than Alys provides. In a pantheon with Orcus, Tsathogga, Muir and Snurge, a bookworm who thinks "shield" is a pretty excellent spell probably didn't last long