Everyone trying to solo Mythic Antorus during Collector’s Bounty for both the 
Antoran Charhound and 
Shackled Ur’zul will come to an unexpected halt during Mythic Eonar. The fight is very annoying and unless you know what you’re doing, you’re going to spend a lot of time wiping.
For anyone trying to solo the boss, I highly recommend you to watch the following video by Squishei. I’ve been using it for years and it taught me how to properly solo the encounter.
First, go to the boss room entrance and wait for the adds to spawn. Defeat them all, including the Fel-Infused Detector.
Then, use your special ability to reach the platform just above Eonar’s Essence and clear the trash there.
Now, use your special ability to jump down and defeat the wave of adds that’s attacking Eonar’s Essence.
Use the platform and your special ability to jump down and clear the remaining trash approaching Eonar.
Use your special ability to reach Eonar and click on one of the flowers behind her.
This will teleport you to the Paraxis. While on the ship, you must click all the Focusing Crystals and jump back before the 
Final Doom cast is finished. If you don’t make it in time, you will wipe, and need to start from the beginning.
When you collect all the crystal effects, jump off the ship using your special ability and go to this area to defeat the final Fel Infused Destructor.
Use your special ability to reach adds that are running toward Eonar.
Once again, reach this area, wait for the Fel Infused Destructor to spawn, and at this point, the encounter will end.
