Originally Posted by
Qualia
This is what I was talking about since that method of handling Haromm is widely used. One person messed up - moving too slow on Tomb, or being confused / moving too slow when getting targeted by stream, ended up letting hit clip the raid, or someone move together with the stream - I have seen it all during progression and even occasionally during farm - can easily lead to a 1-shot death. Increase the number of people, and you increase the chance it will fall on someone capable of messing up.
I'm not saying it's hard, but it's clearly harder than "follow the tank, AoE, repeat" as there is > nothing < Kardris do can one shot you even if you mess up as long as you don't stand in red circle for 15s (the debuff can, but easily handled with personal CD or absorb, and you have a long period of time to prepare for it).