Chaos Arbiter is a skin for Chaos Knight. The skin was added to the game on August 10, 2019. It was created by VALVE.
The rarity of Chaos Arbiter is Immortal, and been equipped it takes a “weapon” slot. The skin doesn’t have alternative styles. At this moment the item is available for trade.
At the moment, Chaos Arbiter is not on the list of popular skins and is rarely seen in the game.