My experienc with Nyx so long

They can't be spammed unless you build bloodstone, his mana pool is too ****ing tiny, and soul ring and medallion aren't good items for NYX. Minus armor won't help you with vendetta because you need to attack out of invis, and his right click is really bad for an agi hero with no HP. Dagon is simply better for burst damage and gives him a bigger mana pool, and urn gives him mana regen + health and strength. You should be ganking through most of the game with him, amassing gold on NyX is wasted unless they're through ganks. He needs to keep the enemy down.

Quite frankly, he is an intelligence hero, or should be built as one. if you play him as an AGI hero he's ****. Well he's **** either way, but he's less ****ty as a nuker.

His ultimate helps him to keep up with speed, he must gank each time he has ultimate available.

Not a bad guide, it's pretty nice.

I think this guide is pretty well made. Though in the beginning it could maybe use a Quelling Blade or maybe something more to help Nyx out with the creeps when the game starts. But other than that I think you did well in making your guide.

Also I think Nyx is still rather slow with the Arcane boots. Maybe some Power Treads or maybe some Tranquil boots would help him speed up and to regenerate health/mana early in the game, (when he's not using his ultimate) Though I did notice you put up the Boots of Travel in Luxury....good job though.

you wouldnt even need a blade mail since your role is jumping somone and bursting them down. you are not a tank. so the next item u must go for is etheral blade. with the additional 40% extra magic damage you will be able to do 1120 damage with a lvl 5 dagon.

i wouldnt use medalion becaus it breaker your invisibiliti and you have no surprise tool. and as nyx i try to avoid to stay to long at a lane so i move from lane to lane and kill all who move around solo

You are building him as a inteligence heroe, his skills does need mana but they can simply be spammed and regen quickly with ring of bassilus, Soul ring and Medalion of courage all thogheter in one combo (They all grant you mana regen). Also in this guide, you seem to be ganking the the 8/4 part of the game, dont think thats even possibru.