[sonny]

I have found a 9th level spell "Scroll of Abyssal Fury" but can not put it in Dak'kon's spell book.
Get message that his intelligence is not high enough. He is a lv 12 mage and I have his intelligence boosted +2 with the Tattoo of Revelation, but that only brings his intel to 15.
1.Is there another way to get his intel up?
2.Have I missed something that would have done it?
Currently in Crust Prison for 1st time. Spent a lot of time in Modron maze building exp. levels.

Thanks
Sonny