Blizzard describes the essence of reaching Alt 3 in World of Warcraft. You must know this.
A new system has been discussed in the forum post that allows players with Tier 3 Azerite characters who have at least one character to get an alternative to these Tier 3 Azerite Essences. 'A coin called Echo of Nialosa.

If any of your other characters are receiving Tier 3 gasoline, the team will discover that MOM will provide Tier 3 gasoline for 500 Ny'alotha echoes. If you can buy one of the following MUTTER essences, you will receive a corresponding echo for each event:

Black Empire Raid-125 Echoes of Ny'alotha
Achilles / Amathite / Mantide / Echo Raid Mogu from Nialosa 75
Terrible Vision: Nialota has reverberated 50 times and each time an additional target has been reached, 25 reverbs (150 reverbs, perfectly clear)
Niallotta Messenger Mission 50 Echoes
Heroic Echo of the Battlefront of Nialostha Darkshore 75
Normal / Heroic / Mythical Raidmaster Ny’alotha: Each Ny’alotha hits 15-25, each boss once a week
Nialosa Raider Wings-Nialosa 25 Echo
Random victories on the battlefield - Niallosta Echo 15-25
Arena level wins: Ny'alotha base echoes 10-25 when PvP rating increases
Rated 35 for Battlefield Victory-Neolota Baseline Echo when PvP level increases
Weekly PvP cache resonates from 175 to 300 depending on PvP rating
Keystone Dungeon Escape Epic Treasure Chest - 3 rounds of Nellotta per Keystone level (for example, 10 fabulous rounds, 30 rounds of Nellotta)
Once a week there is a fabulous trapezoidal memory: each upper trapezoidal level will reflect Ny’alotha 20 times
The post quotes comments from the community explaining why they decided to make this change.

"We had conversations with the community and we wanted to know the motivation for this change, especially since we had previously stated that we did not intend to use gasoline for the entire account. They are increasingly inclined to use cosmetics for the entire account" (frames, pets , makeover, titles, etc.) and content access (World Quest unlock, dungeon customizations, etc.), but we work hard to find the power (character level), specific elements of advanced systems (like artifacts or garnishes, etc.), specific to the character. "