As many as you wish. You obviously cannot cast them all at once but you can know a lot. If they are arcane, you need a spell book, if they are Shadow spells they are purely intuitive. A note on Arcane spells. Once you memorize a spell you can always remember it with no need to read it up again all the time, but a spell book stores the articulation, words, etc for future use should the need arise.<br/><br/>Remember to pass the spells by me first Demik for approval.