Khaos

This plane lives up to its moniker by being a realm of complete chaotic destruction and creation. Its inhabitants revel in this nature not out of a malignant but out of a need to constantly destroy and innovate what was and is. Much of what is created is soon to be destroyed and vice versa in Khaos. This plane was created as a response to the need to balance the absolute order that comes with Ordinatus. Somehow this plane is still seen as abhorrent to the vast unknowable powers that dwell in the Void. 
(for the sake of gameplay, this plane is equivalent to Golarion's Maelstrom)