Spell Casting AI

[Archonsod]

Presumably Fat refers to the fatigue incurred for casting, Boost is the bonus gained by gem use, vis looks like LOS or potential targets.
Unfortunately, it's not clear to me how it's coming up with the final scores. It looks like it's automatically discarding spells which you can't cast (either through magic picks or range etc) with those -1 results. It looks like it assigns a point value based on targets hit & damage or effect (for offensive spells) and effect on self for buffs (I would assume the point values are assigned, i.e. slowing the opponent is worth 2 points). Problem is, we can't see the calculation it then uses for the final score (so we don't know how much fatigue and gem use factor into the calculation).
The interesting thing is, it looks like it's thinking about using a gem to cast Summon Earthpower...