Fire wizard for the win, the first time I played through this I took the lightning wizard into the last 2 rounds and not sure if I was incredibly unlucky but I couldn't beat the lightning boss, once I started to get low I tried to heal but only got healed for 1 ;-;
Then using the fire wizard I blasted through the last 2 rounds, I really loved the art of this game, the creatures and attacks where really nice to look at!