Preparation
Get ready for CPK.
Get to void, then enter the copper door. Prqpqrprpqpr is located in an up in the maze, thankfully it is trackable. Once you go up you will follow a very very long linear path that has the occasional strange sentient phenomena mob. You must kill to pass by. These mobs do low damage attacks but emote (The static buildup becomes too much, and *KRZP*) for large damage (2.6k). Kill them as fast as possible.
Encounter
Finally you reach the end and face the boss. Spell him up as normal (doesn't seem immune to anything). Also silence him. Then attack as normal. He doesn't do anything out of the ordinary.
After you kill theres a portal up that brings you to Mordred.
Loot
Generic boss loot