Skill: Shake

Hi guys, i was wondering if any of you had successful attempts on using this skill?
or is this skill bugged?
I tried using it but none of the new monsters that entered the fight are stunned.

I think it only works when your opponent manually switches monsters. Not when the die and next one comes out.

It's really good in pvp

This skill doesn't work for my Scythe in any way, so disappointed!!

Works on my scythe perfectly