Spell Casting AI

[Endoperez]

Archonsod said:
Presumably Fat refers to the fatigue incurred for casting, Boost is the bonus gained by gem use, vis looks like LOS or potential targets.

Also, Dominions magic system is heavily influenced by Ars Magica role-playing system. In Ars Magica, everyone plays a mage, magus, and there's this beautiful system which allows very liberal use of magic, and beautifully described spells. I'll take Arcs of Fiery Ribbons and Ball of Abysmal Fire over Scorching Ray and Fireball any time of the day. Ars Magica also had rules for how auras of different powers (Fae, Infernal, Dominion of God, and Magic) interact with the world...

Any way, magic "gems" were called Vis in Ars Magica. Further:
Not enough vis for Summon Lesser Earth Elemental

It fits.