Why ghostblade on khazix
So the standard build I see is warrior with either blue or green smite into ghostblade. What I am wondering is why go for that item when I feel deaths dance is better because it gives you a massive amount of ad and I like its passive more then the movespeed and attack speed offered by ghostblade. It also gives 10% cdr which helps kha get that one last q or w off for that close gank or tower dive. Why is ghost blade so much more popular?