[Cubes]

Many things are effected by your magic level.
-The distance Icestorm travels
-The radius of Destruction.
-The effect of using /cast Magic Rune "Holy Possession" or any resist spell for that matter.
-The level in which your rune of death can bile someone.

There is many other things that your magic level effects but none of it is substantial enough to level your magic past 18 because the mp cost of spells from higher levels isn't worth it. I honestly should have kept my magic at 18 because I could spam bullets and Icestorm among the few other spells I would normally use with hardly any cool down between spams. With higher level magic, I think mine is 35 unless you have 30 power you're going to be wishing you had 18 magic and since obtaining 30 pow 30 dex is pretty impossible without epic gear mages are forced to spam and run while waiting for mana to regenerate.