Imagined Dragons World Tour

Around the Emerald Dreamway within the Emerald Nightmare raid, where the Dragons of Nightmare are waiting, there are several portals. On your map, these are signified by blue swirly icons. You can run into these to be teleported to an instance of where it would normally lead, where you will find several green "spirits" floating around. Running into one will grant you the Dream Essence buff for that zone. Exit the portal and repeat for all four around the room, each giving you a seperate Dream Essence buff. Once you have four separate Dream Essence buffs, down the boss to acquire this achievement. I am unsure if every member of the raid must be alive for the achievement to count.

These are the four buffs you need:
[spell=214588]
[spell=214601]
[spell=214604]
[spell=214610]

Easy Solo for Level 120 Pet Classes Battle for Azeroth and Level 60 Pet Classes Shadowlands and Beyond...

1. Normal Difficulty.

2. Boss aggro must always be on your pet while in the Emerald Dreamway.

3. Enter Duskwood, grab an orb, quick run back.

4. Get aggro on your pet

5. Enter Hinterlands, grab an orb, quick run back.

6. Get aggro on your pet, stay and fight a little until Taerar shows up.

7. Enter Feralas, grab an orb, quick run back.

8. Get aggro on your pet.

9. Enter Ashenvale, grab an orb.

10. Dismiss Pet, you will teleport back to the Emerald Dreamway in time.

11. With all Four Dream Essences in your buffs, Nuke Bosses

12. ?

13. Profit. Achievement Completed.

Not possible to solo (without pet class) currently (v8.1.5) as you get teleported back to the fight, immediately after entering a portal, so you don't have time to pick up the buff.