Ykesha also has a 1-second stun effect. I still use my Throneblade when I'm not the MA and against Kael Giants I get the message "Your Target is immune to the Stun portion of this effect" (or something similar) message. Ykesha is actually an extremely nice aggro proc because of the Damage+Stun effects. I sure wish this thing still dropped. I'd be using one.