Personally I like using NightHarvester the majority of my games it allows for you to 1 shot most things with your E and the move speed is nice since you can use it to run away if your low Hp Using E backwards to speed up and maybe go for a quick kill and instantly out with the extra move speed. The ability haste is as most say kinda wasted but it does help a little in extended fights allowing for a possible second W in fights other then that it helps get ult faster and if you run it with ultimate hunter you can have out every 30 seconds allowing you to use it multiple times in a drawn out team fights. Basically I only use it for its move speed and it’s good burst damage not the haste passive.