OK, I finally got around to Kangaxx (after reading horror stories about him on this board). He turned into the demi-lich and Minsc killed him with the second blow of his mace (of disruption). How disappointing is that?

I assume that Kangaxx failed his save, but the text window didn't say anything about that. Any thoughts? Do people think that the MoD is really overpowered against the undead?