March 20th, 2024 - Server updated to version 2.30eMarch 19th, 2024 - Server updated to version 2.30dMarch 3rd, 2024 - Server updated to version 2.30c
As you can see I started by casting Mordenkainen's Disjunction before doing my offensive spells. The weird this is once you get him out of the throne room, and into the pit of bones, then spells start working on him.