User blog comment:JmLyan/Tayse, the Crystal Refiner/@comment-24896347-20140627043151/@comment-5649293-20140627200552

The " 5 stun until you got hit " stuff is called Mesmerize in other MOBAs (SMITE) and it's not that op when you understand it;

Being mesmerize for 5 seconds is making the target unable to cast spells / attack / moves for 5 seconds if this target got hit before the duration ends he will "wake up" and be able to cast spells etc ... The difference is when you get stunned for X seconds even after being hit you'll still be stunned for the entire duration.