And with enough people we mean the WHOLE party xD. I think 9 is enough when you are with 10 people, but everyone is like 5% healthbar after it with our test.
Then we tried it with 4 people when everyone left and we needed all 4 people to stand in the AoE to not die. And then cloth classes were still insta-dieing xD
So I think the mechanic is all stacking up, but not when you are with less then 10 in the party (sad noises). Also scoundrels with True Gambler (the dps talent everyone uses) will not be allowed. Because they will die.
The jump has a castbar btw. But when the boss starts the castbar, something like 0.001 seconds later it jumps to the group and damages immediately. Then it finishes the castbar (it hits before the finish). A possible mechanic could have been dodging the jump. But I am sure it is impossible to dodge because the castbar doesnāt warn enough even for a computer. So that might have been wrongly tuned.
I do still think this boss is doable, but our group didnāt get far enough for all my thoughts to finish. Just having no true gambler scoundrel and not tuned well enough to be survivable with less then 10 people (it is scaled, just not well enough) are two big no-noās in the design.