Wow - Solo Monk - Sepulcher Ones (Mythic mode) - Dausegne - 10.2.7

This boss is easy by tank but almost imposible by a DD, but i did it by a DD.
This boss has a lot of damage by tank's ability and very strong DoT.
We need to use all def's gear to survive it.
1)We need to use defs for survive a tank's debuff.
2)We need to kite for a DoT-mechanic. Just run away of a boss after every tank's beam and it will okay.
In phase two, problems will begin. This boss will use 3 beams instead 2, so we need to use a teleport trick to survive it - just run away of a room with the boss and the beam won't hit you.
If u will play tank - you can use only tank's def for survive it and you won't need to run away.
Just repeat it 2 times and you will win, but it will hard by a DD.
It's all =)