He has said and proven that he can cast spells from his book. This is the list of spells he claimed available and mastered by him;
Haunted fey aspect
Pyrotechnics we saw this spell as he demonstrated that he himself could cast
He claimed he had other secrets that he may reveal later. He is a blessed book, the magic item, with the psyche of an ancient wizard fro the fallen city of Vael Turog.
He may allow any one spell in his book read as if it were a scroll cast at the readers caster level once per day.
He has ranks in these knowledge skills: arcana, planes, nature, ancient history, dungeoneering, spellcraft. he also can see and hear with normal human senses to a range of 30 feet.