Phantom Assasin/Mortred/PA

Pitted against the very society that condemned her to a life of Undeath, Mortred takes delight in the slaughter of her kindred people. Abandoned during their expeditious retreat in battle, she was left to the mercy of the undead. Her twisted fate was merely a sacrifice to them - a tool in slowing their predators' pursuit. But… the Lich King saw the malevolence and hatred within her. He bestowed upon her an opportunity - a vessel of darkness with which to enact her vengeance. Eternally grateful of his service, Mortred hunts her wretched Night Elf sisters from the shadows, fueled by an insatiable desire to seek justice. I was playing dota this few days before i realised i was already owning with this hero... unbelievable power... once you reach lvl 16 even if you do not have any items, it is still possible to own...

Stifling Dagger
Hurls a dagger which deals minor pure damage and slows the unit's movement speed for a short duration. Deals half damage to heroes.

Level 1 - 40 Damage, 50% Slow. Lasts 1 seconds.
Level 2 - 80 Damage, 50% Slow. Lasts 2 seconds.
Level 3 - 120 Damage, 50% Slow. Lasts 3 seconds.
Level 4 - 160 Damage, 50% Slow. Lasts 4 seconds.

Cooldown: 10
Manacost: 30/25/20/15

Level 1: 30 mana, 10 sec cooldown.
Level 2: 25 mana, 10 sec cooldown.
Level 3: 20 mana, 10 sec cooldown.
Level 4: 15 mana, 10 sec cooldown.

surprisingly this skill can be used for 3 purposes. 1) Harrasing 2) Creep farming 3)super slowing... This is a must max skill whether early middle or late games...

Blink Strike
Teleports to a unit and strikes it if it is a foe, dealing bonus damage. Casting range improves per level.
Costs 50 mana.

Level 1 - deals 30 extra damage.
Level 2 - deals 60 extra damage.
Level 3 - deals 90 extra damage.
Level 4 - deals 120 extra damage.

Cooldown: 30/20/10/5 seconds.

Level 1: 50 mana, 30 sec cooldown.
Level 2: 50 mana, 20 sec cooldown.
Level 3: 50 mana, 10 sec cooldown.
Level 4: 50 mana, 5 sec cooldown.

another important skill... allows you to blink a short distance to either retreat or for a good attack.

Blur
The Phantom Assassin becomes hard to see by blurring her body. Some enemy attacks miss.

Level 1 - 7% dodge.
Level 2 - 14% dodge.
Level 3 - 21% dodge.
Level 4 - 28% dodge.

Passive

Pretty important skill at late games once you have your butterfly. evasion is extremely high at about 50%...

Coup de grâce
Mortred has refined her hero-killing skills to a high degree.

Level 1 - 15% chance to 2.0x critical.
Level 2 - 15% chance to 3.0x critical.
Level 3 - 15% chance to 4.0x critical.

Passive

This to me is one of the best ultimates in the whole game... at lvl 16, 4x is obviously alot... if you farm extremely well, you can actually kill heroes in 2 hits... it works superb with helmet of dominator/satanic/vladmir offering...

Skill build...

LVL 1: stifling dagger
LVL 2: Blink Strike
LVL 3: stifling dagger
LVL 4: blink and so on.....
LVL 6: Coup De Grace

for the others, max out dagger then blink strike and the blur before attribute bonus

Item Build (according to 5 v 5 when you CHOOSE pa): 1) 2 circlet of nobility, 2 healing salves. 2) 2 wraith bands 3) boots of speed 4) Helmet of dominator 5) power treads 6)battle fury 7) butterfly 8)satanic

TAKE NOTE: IF YOU ARE CONFIDENT OF YOUR SKILLS OF FARMING, YOU MIGHT WANT TO JUST GET HELMET OF DOMINATOR IMMEDIATELY INSTEAD OF BUYING CIRCLETS, THIS IS ONLY FOR SUPERB FARMERS. YOU ARE BETTER OFF WITH MY BUILD IF YOUR FARMING SKILLS ARE NOT GOOD.