[Sawrock]

And even for cutthroat, you can just shove your butt to a wall.

Walls: the silence of VAs.

Vanishing Strike would like to have a word with you.

It would, but it's been silenced. 

On a more serious note, if you're able to use Vanishing Strike, one of two things is happening:

• You've mainclassed void assassin and thus don't have access to Fleur and lost 10 hit, so someone having their butt to a wall doesn't even matter- you're not a crit build to begin with.
  
• You've spent 80 points in APT, thus losing many stats for the ability to use void energy.