User blog comment:AP Sejuani/CCC4: Kai, the Spellthief/@comment-10958553-20140712142951/@comment-26055105-20140720023152

I'm glad you like it! About the "Stealing spells" bit, that was his original ultimate: He would copy the last enemy spellcast. However, that created some issues: What if he copied Orianna's Command: Attack? It wouldn't make a whole lot of sense.

I'll work on the clarity bits now. I hadn't thought about the tower pushing, the AD steal was mainly intended so that he would be at least a functional jungler.

For the strategy: For extra ebil, E back in to lane once the cooldown resets, then follow up with an ult and a W. That way you get a free stun and get the element of surprise on them as well!