WAYYYYYY back in the mid-2000s, Lake Austin had one of the best EMs ever (the current one is one of the best, but the one back then was one of the all-time best - so much so that people created characters to come to LA events, before transfers became a dime a dozen).
There was an event arc that involved Lord Martel Navarre (the main NPC) and his evil brother Mortaigne (a death knight). You can still find Mortaigne's house on the Labyrinth island. It was surrounded by his forces.
Mortaine's forces included Ancient Liches, Rotting Corpses, skeletal Wyrms, etc. And an alliance (short-lived) with the minotaurs. There was an assault on Luna, where the Minotaurs turned on Mortaine when he started animating THEIR dead to attack.
However, EA shut down the EM program suddenly a few days after the event, with Martel dying, his sons corrupted, and LUNA STILL SURROUNDED BY MORTAINE'S ARMY. It took 4 years or more before someone FINALLY listened at Bioware/Mythic (yes it took THAT LONG) and removed the ancient liches, RCs and SW that made the area north of Luna (prime housing vendor areas elsewhere) UNUSABLE except for hunting. The Old-timers still wish we could have gotten a real conclusion to that event. And, worse, Luna still has closed gates on some sides.