How you make your wizard like a spontaneous caster.

[Archao]

Spontaneous Divination: Complete Champion page 52
A wizard class feature, some interpret to allow you to use ANY Divination spell EVER, but was errata'd to only be those in your spellbook.

Versatile Spellcaster: Races of the Dragon, page 101

[Kuroimaken]

Not sure if this is still being updated or not but I thought this should be mentioned.

Spontaneous Divination + Versitile Spellcaster = Potential of spontaneously casting ALL sorcerer/wizard spells in the game so long as they are recored in your spellbook.

Did anyone mention this already?

This becomes more efficient if you throw in 2 levels of Geometer and Boccobs Blessed Book.

Every spell from levels 0-9 only take up 1 page and the cost to scribe them is free.

Now the only issue is obtaining a scrolls of every level 0-9 sorcerer/wizard spell.

Wouldn't that be limited to divination spells? 

[Eviltedzies]

The wording of versitile spellcasting states "You can use two spell slots of the same level to cast a spell you know that is one level higher."

Wizard spells known are any spells recorded in your spellbook. So technically if you choose to not prepare any spells for the day or you leave some open spell slots.... you can spontaneously cast ANY spell in your spellbook at any time.

So then put every spell in the game into your spellbook and presto! Your a walking arcane librairy.

Only downside is you need a LOT of extra spells per day or spell slots to make it effective. Otherwise your a wizard with half your spells per day. =/