[calmon]

The mod says:

#selectspell "Siege Golem"
#researchlevel 7
#fatiguecost 1500
#end

If this brings the casting costs down to 0 maybe there are other spells with the same problem.

For example:
#selectspell "Juggernaut Construction"
#fatiguecost 1500
#end

What does the spell show when try to cast it FAJ? 0 or 20 earth gems.