Thanks for the playing the mod! I am going to give the descriptions for Find Beasts and the Sorcerer's Tower a look over, and see if I can make them more descriptive of the effects.
Regarding the radius and chances for Find Beats, Mineral Sight, Incite Crops, etc: I do want it to be highly unpredictable AND unlikely to be close to the caster. The Sorcerer would be too much of an economic powerhouse if he could consistently plop resources down right next to your city of choice!
The AI does not use the spells, as far as I know. That's the way I'd prefer it, really. Since I have no access to the nuts and bolts of the AI, I generally opt to only encourage them to use effects that are similar to effects I know it 'understands' already.
Regarding Sorcerer champions, there ARE four Sorcerers that are possible to recruit (Vernak Who Ruminates and Milgrashiv Lifeturned for kingdoms, Ursuvak Vengier and Pelmiar Of Pariden for empires). They are level 3 and 5, so Fame Levels 50 and 100 are where they might show up.
If you want to make some new ones, I'd love to see them! I reserve the right to make some lore text edits and maybe balance edits, but I'll almost certainly add them to the mod! I'd really appreciate any you could send my way.
Feel free to reach out here again if you have more questions.