User blog comment:JmLyan/Shoru, the Unseen Shadow/@comment-25548091-20141030002135/@comment-7709681-20141101030642

@ Scudmarx: It is useful to know when you are seen, but you lose half of your damage and utility output in the process. And pretty much any enemy champion that dedicates to roam would make her life a nightmare.

And, knowing the possible original source from such ult, the objective of the ult is to allow your team to safely reposition themselves, such way you have a secured engage.