In order to continue improving the endgame for players, Blizzard has decided to rework the Echoes of Ny’alotha system in the current commercial version of World of Warcraft: Battle for Azeroth. Blizzard Announces Rework Of World of Warcraft’s Echoes Of Ny’alotha System.
We wrote about this system during its implementation, which you can read here. Essentially, Blizzard added the system to help make Azerite Essences, a central and vital part of endgame content, easier to obtain for the entire account.
These essences provide active and passive effects that are extremely useful and essential for player loads, which means that they are not overlooked if they intend to enter the end-game content levels. However, they are also a bit difficult to grind and can be difficult to obtain, each species having its own source.