Howdy, I'm wondering what the caster level would be a 10th level character. One that has 5 levels of wizard, and 5 levels in a prestige class that grants spells per day only on even levels. I've found no mention of this in the core books, but I'm inclined to say the caster level would be 10th, even though the spells per day would be that of a 7th level character. Since spells per day doesn't influence caster level as far as I can see, and caster level is the number of spell casting levels you have, I think it's 10. If anyone has a page number they can quote me then I'd be grateful, otherwise I'd like to open it up for debate.