Puzzle Quest: Challenge of the Warlords

It not that hard to kill him. I was lvl 11 at the point I got there and I got through as I was lvl 12....

There's just two things you have to in mind:
1. He needs GOLD to got his special powers. If he got enough of if YOU ARE DEAD.
2. He needs RED MANA for ALL of his spells. For the dangerous ones he needs at least 15 of it. If he got enough of it YOU ARE ALMOST DEAD.

So there's a strategy:
- Get a Big Troll-Ring (it restore you life if you BLUE MANA is over 9)
- Get at least 9 BLUE MANA. Hold it at least on this level.
- At any price avoid him from getting GOLD
- At any price avoid him from getting over 15 RED MANA
- Its better to get a little hit and recover it as let him get GOLD or MANA and DIE.....

PS: I played Wizard and used only four spells to kill him: Fire Bolt, Fireball and Heat Sink, Mana Burn