User blog comment:Emptylord/Leaked Champion: Vel'Koz/@comment-5788083-20140120111422/@comment-5788083-20140123181545

and blitz's pull says it stuns unlike vol'koz's E, if it is to do with movement then why do no other knockbacks or pulls use the stun symble (bar Thresh   and Nautilus and both their skills say they stun and each of these skills also has a "tether" from the caster unlike  Tectonic Disruption)