PLEASE READ:
DO NOT LEVEL UP VOID PAST LV 1 AND SAVE SKILLPOINTS.

Keep void on 1 and last hit with it whenever you can, since you are a melee hero mid, last hits will be an issue. Soak up as much EXP As possible.
I always buy a mana pot to spam 2 more voids also it frees up your slot for bottle.

As soon as you get bottle, level up void till maxed, then level up hunter of the night. Do not put into ulti at 6, it is useless. Get as many runes and ganks as much as you can at 6mins

gl hf