To be honest, new Dark Harvest is bullshit on Kha'Zhix. Let's look at his passive, it's basically a duskblade in his passive. But it doesn't stop there, he also happen to build Duskblade, so basically everytime he R to stealth and apply his passive, he also apply duskblade so it's a lot of damage from his passive and 1 item.. he also have a gap closer that if evolved reset on kill so since his passive,mixed with Duskblade and Dark Harvest apply, he basically 3/4 the HP of a squishy and that's without his Q. If he Q and his target is alone, it's basically over before they can say ''Oof''. He also have innate sustain and his Q refund 60% of it's cooldown on takedown. Basically he use it as finisher to get reset and go over and over again. The fact that he can also stealth up to 3 time for 2 second each is insane, he can negate CC and jump away. He is indeed too safe but also deal way to much damage overall. Kha'Zhix was fine, so every assasins BEFORE the Duskblade appearance. This item broke the assassins meta and make them overbearing until today. This item does the same issue Death Fire Grasp caused on AP assassins back then. Overbearing without real counterplay. Yes tank kinda deny this , I agree, but who play tank nowadays thanks to skirmirsher with Conqueror. Basically nobody. Sejuani is in the dust for a while and until they do something about it, Assassins/Skirmisher/Diver will take the spotlight but a good way to help is to remove Duskblade alltogether. This item need to go.