Don't play the game as a mage - you will get bored quickly!

[Smash]

Who the hell use fireball in late game? Even fire rain is blah, use geyzer and later armaggedon if you go spell damage mage u need to reduce enemy since from 10 stack to 1-2 the biggest then disable rest, sadly there is no some kind of "implosion" spell which could do massive damage to one target.