User blog comment:Willbachbakal/(Champion Rework) Evelynn, the Widowmaker/@comment-24385282-20150917231448

I think perhaps Eve's ult could be a little too strong. At rank 1, she's got about a 60-second window whenever it is up (seeing as there are 60 seconds between Nights, which last 60 seconds, and her ultimate is on a 120 second cooldown). During this window, which increases to infinite as the cooldown decreases to 60 seconds, Evelynn can run straight past the tanks and supports of a team completely unnoticed (as the invisibility is no longer hindered by proximity to enemy champions), grab out a high-priority squishy enemy, removing their team from play, then burst them down likely before they can retaliate and run away.

In this scenario, its quite possible that no one other than her target would ever even see her, much less be able to do a single thing to her whatsoever. Combine this with higher burst within the time limit of her Q, vastly increased E damage that only requires her to move to the other side of her target (not that this should be too difficult as she takes them by complete surprise after moving into a position where she thinks she has the best chances of pulling this off), and she can literally kill a main carry with 0 counterplay.

You can't see her coming and you can't stop her once you know she's there, all you can do is hope your carry outplays her, but considering that assassins counter squishy carries and the fact that she has the ultimate element of surprise and a powerful movement speed buff, that's quite unlikely.