The Diablo Immortal Keystone can be exchanged through the Keystone Merchant, which is the most direct way to obtain it.
The Honor Merchant is also a way to obtain the Diablo Immortal Keystone, which can be obtained through the redemption option of the Honor Merchant.
If the player's own in-game balance is sufficient, he can also choose to recharge and purchase to obtain the Diablo Immortal Keystone.
By completing three missions in the game, you can get more rewards, especially strengthening key stones. Because legendary gems must be produced, players can consider trying to get three of them when completing three missions.