Leader of the Mage council

I am trying to defeat him to complete the returning part of the game, but no matter what I try I can cause no damage!!?
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Jacob_L wrote:First off, are you currently in the Other Dimension when you fight him? This is the ONLY place where his defeat is possible. Second, what type of attacks are you using? The Mage Council Leader has a Resist Magic spell (four black clouds when he casts) that negates any magical attacks/afflictions. I've come to realize melee attacks are optimal, as they can get up-close and personal so he cannot try to sneak around corners to hide. If you are using melee and it still has no effect, try purchasing/repairing a better weapon for fighting use.