Maiev Shadowsong by thedisputednewt

Recuperate: Regen 10 mana per second while in Stealth.
Whirlwind of Knives: Increase the radius of Fan of Knives by 30%.
Seasoned Marksman: For every six minion kills gain +1 basic attack damage. Hero Takedowns count as 3 kills.
Lasting Mark: Marks last for 3 seconds.

Envenom: See Secondary Abilities
Deadly Assassin: Increases the ability power of Assassin's Pursuit to 10%. When you charge, deal an additional 50 damage.
Master Jailer: Increases the damage reduction of Warden's Stamina to 10%. You can have 2 targets marked.

Quick Draw: Cast Fan of Knives when you blink. It only deals 50% damage.
Serrated Knives: Fan of Knives deals an additional 80 damage over 4 seconds
Hail of Knives: 1 second after you cast Fan of Knives, cast it a second time. It only deals 50% damage.

SEE HEROIC ABILITIES

Vanish: You only have to be out of combat for 1 seconds to use Hide.
Shackle: See Secondary Abilities
Giant Killer: Basic attacks against enemy heroes deal bonus damage equal to 1.5% of their total hit points.
Full Bandoleer: Fan of Knives has a 4 second cooldown.

Blood for Blood: See Secondary Abilities
Rejuvenate: Heal 50% of your hit points over 5 seconds when you hide.
Warden's Vigor: Abilities cooldown 3 times as fast for 5 seconds after you switch stances.
Razor Cloak: Enemies that hit you take 30 damage over 5 seconds.

Void Strike: Increases your Shadow Strikes damage by 30%, and the slow to 75% decaying rapidly over 6 seconds.
Renewed Vengeance: When your Avatar of Vengeance dies, summon a new one at your location, that starts at 50% health and can summon up to 5 spirits.
Assassinate: See Secondary Abilities
Imprison: See Secondary Abilities
Bolt of the Storm: See Secondary Abilities