I think he's bugged. His skill description says any cooldown decrease will trigger Scarlet Eclipse. I am running Pythion, Mithrala, Venomage, Skull Lord and Ukko. I went through their skill descriptions, masteries, artifacts, and accessories looking for anything that would affect a skill cooldown. I removed the "cycle of" masteries, but it didn't help. I can't find anything else, but this boss keeps triggering Scarlet Eclipse constantly, then we wipe. No refresh, no reflex, no cycle of magic or cycle of revenge. Something is not working as written, because that Passive is procing repeatedly. He's counting something else as a cooldown reduction in his code. I can't figure out what it is.