10 bucks and a beer! It does not instant kill. As I said, it only "looks" that way.
Uhm. Im not trying to start a fight or anything. But if something looks like dog crap, smells like dog crap, feels like dog crap. Chances are it IS dog crap.
If an ability looks like an instant kill, feels like an instant kill, smells like an instant kill. Chances are it is. Maerothir uses the skill in question here, and after figuring out the requirements to get it to work properly, it is 100% a kill.