The OT being Frost Blasted is arguably the most dangerous thing that can happen in KT. Not only do they *definitely* take 104% damage over 4 seconds, but they also have 2 adds on them and no avoidance from being stunned. Meaning it's closer to 150%-200%. It's not surprising they focused on him, but perhaps you can try and keep the back of the room clear for them next time (we tend to spread out in the SW to S area of the room).

Furthermore, if you have the OT bring the adds to the MT, and just have the MT tank everything, it eliminates the risk of the add tank being Frost Blasted - as it's the MT, who isn't an eligible target.

But yeah, I can go one worse. For our first Undying attempt that we actually made it to KT without anyone dying, I had respecced prot (I'm usually holy) and was the OT. Well, little did I know that my UI wasn't ideal for having the two adds on me and seeing Void Zones underneath me. On vent there's a scream "Jax move!", but it's too late, and with about 15% to go on KT I die. Sucks dying like that; it's a good guild so most people are understanding, but you know they blame you (as they should).