Larian Studios Forums Baldur's Gate III Baldur's Gate III - Build Discussion Wizard Class Implementation: Discussion & Feedback

A Wizard can only prepare Wizard level + Intelligence Modifier, but at least 1, spells per day.

So if you have a Level 1 Wizard and have Intelligence 16 or 17, you can prepare 4 spells.

You can change this selection out of combat whenever you like, but you can at no point have more than 4 wizard spells prepared, unless of course you get higher Intelligence or higer Wizard level.