The Mana-Tombs

First time - 4 hunters lv. 62 - Instance Quest open - range 64-66 - Full run 11 min.
Patch 7.3.5 - 4 hunters lv. 66 - range 65-67 - Full run 29 min.

Pandemonius - lv. 66 HP 65430 - Patch 7.3.5 Lv. 67 HP 278561
Tavarok - lv. 66 HP 81788 - Patch 7.3.5 Lv. 67 HP 348201
Nexus-Prince Shaffar - lv. 66 HP 98145 - Patch 7.3.5 Lv. 67 HP 417841

https://youtu.be/q1TwZTjCw4Y