Which mixed hero class from the Chaos faction do you like?

You can upgrade an archmage on my account. Sometimes there are situations where it is necessary to strengthen all spells, including combat spells. I had one case where my regular mage cast the "Ice Bolt" spell on an enemy hero (he had no magic resistance), and after that, he had only 5 XP left (and he had about 250):). And this ruined the game. It is necessary to choose the optimal option for all spells, and increasing their power by 20% would be even better.