Excellent thunder mages should have all bolts to 1 (after the 'int-affects-magic-balance-now' patch ). Once you have decent int and dex, thunder will often hit for maximum damage.
Decent ranked firebolt could be needed for magic PD monsters.
Decent ranked ice/lit bolt is needed to clean up remainings after your thunder/icespear.
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IGN: AKXPrince [Mari] o(∩_∩)o Smasherr [Hangame-Triona]
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