Quote Originally Posted by Zka View Post
Watch the tank and don't go up before him or the boss ganks you.
Just on this point, I have to say if you ever do have an issue like your tank doesn't get up before you, or his thread despawns when he is half way up and you are on the way, you can survive a decent amount of time up there.

Summon your Shadowfiend and use Fade and start running in the opposite direction. I've "tanked" Beth for about 20 seconds before twice like this, your Shadowfiend may die but it's generally worth it to prevent a wipe and gives your tank enough time to get another thread up to you and taunt.

Don't be afraid to just jump down random meteor holes and don't stress about getting to the one in the middle if you need to keep healing, that's what Glyph of Levitate was made for.