Making the Warmage useable

[Marshall]

The only thing I'd change on the class is:
For the Advantage spell, allow it to be any type of spell... this allows the Warmage to try something that isn't necessarily pure combat... but may have a combat advantage.
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This is all I'd do. Change Advanced Learning so that you can take any arcane spell. Or, at worst, let you take spells from Evoc, Conj and likely Abj.

Other than that, the class is already in league with the Blaster Sorceror.