What is Zed's R - Deathmark's passive purpose?
The only thing it does is that it makes him want to kill an ADC time to time, which he wants anyway, right? And if he needs to ult something other (let's say overfed AP) it doesn't do anything... Feels like it was added just for the sake of change.
Edit: Plus it's a hidden power, who of you actually knows what it does without googling it right now?