Im so sorry
First run of the Shroud on my sorc, explained to the pug party I was new to the shroud as a arcane etc, they decided to go hard, got to part two and someone showed me where the crystal was. advice was "Use magic missile or disintigrate"
Well I didn't have disintigrate so magic missle it was, could not take it down quick enough obviously...twice.
I feel like such a tool.
Next guild run though some nice guidlie advised that I could use elemental damage, 2 chain lightnings and it was gone in 3 seconds.
/facepalm