Kha'Zix Slight Rework

I had an idea.

KhaZix has been my favorite jungler since his release. I love his design as a monstrous bug that feeds on the isolated.

But in league of legends, this fantasy falls short.

Kha's power comes from his ability to pick off separated targets. In a teamfight situation, Kha doesn't shine as well as Zed, or Kassadin. Any smart squishy carry will stay near an ally, with the exception of maybe a gragas ult. Isolation is pretty tough to pull off in a teamfight, so I propose a new mechanic. Something that keeps his theme, as well as his assassination potential.

Prey.

Kha will mark an enemy champion his "Prey." Once an enemy is marked, he will have added effects to Taste Their Fear, just like isolation.

Q - Taste Their Fear - Passive: Prey - After striking an enemy champion with Unseen Threat or Taste Their Fear, that champion becomes Kha'Zix's Prey. Enemies are marked for three seconds. The mark can be reactivated with every Unseen Threat triggered or Taste Their Fear. Taste Their Fear's damage on marked targets is increases by 30%. Evolved Taste Their Fear increases this damage to 50%.

I believe that this will give Kha more assassination potential, other than just relying on an enemy champion wandering alone. The counterplay is that Kha will have to keep the mark going. If he cannot land a Q or Passive proc, his damage is drastically lowered.

What do you guys think? I'm posting this from my phone so I will update it once I get to my computer. All feedback appreciated!