As for eons, the Necrolords of Maldraxxus honed their craft at the Maldraxxus Arena in the Theater of Sorrows. Now, the Arena is open to any challenger — and there’s no shortage of champions ready to test their mettle. Prove yourself worthy. Only the strong will survive.
The mysterious Enigma Arena from Zereth Mortis was created by the Progenitors and serves as an ever-changing battlefield. A switch located in the center of the Arena can be used to cover yourself and your allies — or deny it from your opponents. Clever strategists will control and dictate the flow of battle; Those who cannot adapt will surely be defeated.
New arenas will soon head to PTR. Details can be found on World of Warcraft official website.
https://mmos.com/news/world-of-warcraft-previews-new-arenas-coming-in-patch-9-2-eternitys-end World Of Warcraft Preview New arenas coming in patch 9.2: Eternity’s End