Mana Sponge

Moderate Solo for Pet Classes Level 70 Dragonflight, Easy Solo for Level 80 Worldsoul Saga, and Beyond...

1. Normal Difficulty.

2. Begin fight, reduce boss health to 50%, keep aggro on pet.

3. Boss spawns giant purple pools that try to suck you in, then a manifestation spawns. Pull it to yourself, but stand away from boss.

4. Boss eventually goes into stone phase, blue orbs are spawning and heading towards boss, place the manifestation in between the boss and orbs and the manifestation will eat the orbs.

5. Rinse & repeat until manifestation turns into Forbidden Manifestation.

6. Kill Forbidden Manifestation.

7. Nuke boss.

8. ?

9. Profit. Achievement Completed.

We used a 3rd tank for this, but you could probably do without it, just make sure they have a taunt. High mobility is a plus.

During Phase 1 adds will spawn, you can kill the first 2 and have your designated taunter keep the 3rd add in a pool (away from the group so they dont kill it).
When the boss reaches phase 2 have the add (instead of a player) catch one of the orbs coming to the boss. He will empower and become a Forbidden Manifestation.
Make sure you are still going to break the boss's mana shield before using hero/bloodlust to nuke the add down. Kill the add and finish the fight.

Confirmed easy solo for 659 Holy Priest.
1. Must clear all the trash to access the boss
2. Bring the boss down to 50% (or close enough)
3. After a while a 'manifestation' will spawn from a purple pool.
4. Stand between the manifestation and boss. The manifestation will die if it hits the boss.
5. Literally just stand there. Even when silenced. You wont take any damage. Boss behind you. Manifestation on the other side.
6. After about a minute the boss will summon blue mana balls that move towards the boss (boss stops moving)
7. You can now safely move and the manifestation will follow
8. Move so the mana ball hits the manifestation. Took 2 attempts
9. Once hit the Manifestation will change to 'forbidden manifestation'
10. Kill the Forbidden manifestation
11. Instance Achievement tracker will then tell you its ok to kill the boss
12. Achievement
Grats