User blog comment:Emptylord/Custom Champion - Zargonil the Striker Toad/@comment-24597519-20140913150040/@comment-3974211-20140913151456

You have no control over which unit Zargonil will use for leverage - he could use an ally or minion, if he wanted. I initially had it interrupt the target (if enemy), just for thematic reasons (if you jump on someone's back without warning they'll stumble) but I decided that it would be too unreliable and having hard-CC happen randomly seems unfair to play against.

I might make him immune to CC during the dash - but that's only because Gnar's release has allowed me to "test" a similar mechanic, and trying to over someone like Rammus is frustrating.