Raven, the Twilight Phantom

RAVEN THE TWILIGHT PHANTOM

LORE:
I dont know how to write fancy like they do in actual DOTA 2 Lore, but basically a princess wants vengeance after her kingdom is destroyed so she sacrifices her remaining riches for the power to control the shadows.

ABILITIES:

Midnight Wind [Active]
Creates a moving wind that damages enemy units and removes sight from that area for the enemies.
Duration of removed sight : 3/4/5/6
Cooldown : 10/9/8/7
Mana Cost : 95/100/105/110
Range : 500

Demonic Rift [Active]
Creates a rift in the ground that slows and damages enemy units.
Damage per second : 75/100/125/150
Cooldown : 25
Duration : 5
Mana Cost : 120

Dark Energy [Passive]
For each unit killed, Raven gets a damage bonus for 4 seconds.
Duration : 4
Damage : 25/30/35/40
Max Stacks : 3

Twilight Form [Active]
Increases attack speed and movement speed by 150%. If she kills a hero during this period of time, they become a twilight demon under her control.

Duration : Infinite
Mana per second : 15/13/11

wtf>? Duration : Infinite seriously, can u explain what's this skill mean?

This skill is infinite meaning it can be toggled on and off, but there is no limit to how long the skill can last.

You havent included any stats/stat gains/MS,range, etc.

Also give the stats and abilities of the twilight demon.

Your 3 skills are pretty op. For the Q, lets say your opponent is melee and they go up, if you use it then they have no sight at all of anything in the lane, rather, make it a sight reduction on heros. For your W, Thats a possible 325 damage to a unit at level 1. Reduce it to something along the lines of 30/50/70/90 and if there is a slow, mention the numbers on that. For the passive +25 damage is alot of it refreshes and the players is a good last hitter.