Small Update
Bring Infuriating Heat on one of the Rangers and a Paragon Hero with this bar: OQijEymM6MDbT8NmEXhZx7YaMA
Micro the first 6 skills from left to right on yourself before going in and aggroing the mobs (Brace Yourself and Anthem of Flame are there only to refresh the duration of Bladeturn Refrain).
These will make the farm faster and a bit more consistent. Just keep an eye on Mental Block as it will be more likely to run out due to increased block chance and speed boost.
Also, I forgot to mention this in the video: at the end of the pull, right before you approach the casters, try to hit as many Carps as possible with Mirage Cloak. This will cause them to scatter, so only a few of them will be attacking you while you cast EBSoH, VoS, etc. This is key to minimizing the chance of getting interrupted.