Diablo Immortal - Iben Fahd's Sanctum - Opening All 21 Chests

One of the little quests in Diablo Immortal is Iben Fahd's Sanctum.
Inside this chamber lies Legacy of the Horadrim.
One of the items the player receives are Aspirant Keys. These keys open chests inside the sanctum. It takes over 350 keys to open all the chests. However, this guarantees getting the Tenacity Stone. This stone is required to expand the legacy. All the jewels obtained are used to upgrade various stones - which are received by completing various tasks.

So this video shows what happens when all 21 chests Enjoy!