[Deathblob]

If you view the battle with -dd on, then you can see if can_use_gems is 1 or 0. If it's 0, then he won't ever use gems in the battle, unless you hit the bug where he starts using gems when the enemy routs.

If it's 1, then you are better off saving the higher fatigue spells for later in the script, since if current fatigue is 0, the caster will be unlikely to use gems for fatigue reduction even if the spell has a fatigue cost of 80 or something.

If you're casting Soul Vortex, you might want to bring friendly battery units along with your Rudra to leech health off of. Make sure you don't hit the auto-rout HP limit though.