Yes Iam sure!!
the boss get stuns for the Damages of the rogues and not for the kelvin then.
Go test it in a easy map.
Tell ur frnd to stun a mob/boss with his kelvin.. when the mob/boss get stunned, count 4 secs and you use your kelvin. Your kelvin won't be able to stun! Cuz that mob/boss will be immune to stun for 7 secs!
Bookmarks