User blog comment:AP Sejuani/CCC4: Kai, the Spellthief/@comment-24862418-20140707120108

1. Riot doesn't like risky chance. The only thing they left is crit chance.

2.Assassins risk their life for the enemies carries'. Every spell, every attack count. So  a chance for a spell not to happen is very dangerous for this kind of champ. Maybe reduce the damage/effect instead.

3. Q: Pinball :)). The bonus damage and range should only applied once.

4. W: Draining duration? Maximum stack?

5. The only difference between ranks of E is the range, which is also not noticeable. Maybe refresh W cooldown if the dash gives vision of another champion. Change the description to: can only dash to the fog of war instead of waste the skill if it's not in FoW.

6. R: Very classic. And as you said, very similar to Diana's.