[SixOfSpades]

The last 2 times I took him down I don't think any of my guys got hurt at all, and I didn't use any offensive spells, either.

All I cast were Bless and Chant, each of which grant the party +1 to their attack rolls (I don't know if it's cumulative or not, but better safe than sorry), and Haste. I equipped ranged weapons on everybody and spread my party out among the tops of the 4 stairways, with my Tank by himself. I send my Tank down to start the dialogue, and when the DK fires a Dispel Magic, my Tank runs away, and with Haste and the Boots of Speed, he's well out of range of the Dispel. Then everybody takes a few steps down the stairs and starts firing away. The DK tries to cast some stuff, but he's got a crappy AC, so with Hasted archers firing from 4 directions, he's not gonna live long enough to get much off. Poor guy. Kinda anticlimactic, really.