How to unlock the new Unreal Trial - Containment Bay Z1T9 (Unreal) in FFXIV Patch 6.4

With the release of Final Fantasy XIV Patch 6.4, a new Unreal trial has been released. This time the Heavensward trial Containment Bay Z1T9, which sees you take on Zurvan in the vessels of ancient Allag, has been updated to max level. Here's how to unlock and compete with Zurvan in Containment Bay Z1T9 (Unreal) in FFXIV Patch 6.4

First, before you even begin the Unreal trial, you'll need to have completed the regular version of Containment Bay Z1T9. To do this, complete the quest The Last Pillar to Fall, which is available from Unukalhai in The Rising Stones (X :6.1, Y: 5.3). This is the last in a series of quests that see you take on primals imprisoned by ancient Allag, so make sure you've already defeated Sephirot in Containment Bay S1T7 and Sophia in Containment Bay P1T6 before you unlock Zurvan.