The magic system I feel has been too complex so far, so in order to simplify things here is the new system to calculate the costs of spells.
For non-specialist casters the spells cost the square of their level, so:
Level_______________Cost
1_______________1
2_______________4
3_______________9
4_______________16
5_______________25
6_______________36
7_______________49
8_______________64
9_______________81
10______________100
For specialist casters spells from their specialization cost the same as a spell of one lower would cost. Level 1 spells remain at a cost of 1.
Level_______________Cost
1_______________1
2_______________1
3_______________4
4_______________9
5_______________16
6_______________25
7_______________36
8_______________49
9_______________64
10______________81
Spells from the school they don't specialize in cost the same as a spell from two levels higher.
Level_______________Cost
1_______________9
2_______________16
3_______________25
4_______________36
5_______________49
6_______________64
7_______________81
8_______________100
9_______________121
10______________144
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