Level 1:
-With the Wind (Q): Increases Withering Fire range by 25%
-Lost Soul (W): Reduces the cooldown of Shadow Dagger by 2 seconds
-Barbed Shot (Q): Withering Fire deals 200% bonus damage to Minions and Mercenaries
-Corruption (Trait): Basic Attacks against Structures destroy 2 Ammunition

Level 4:
-Paralysis (Trait): Increases duration of Black Arrow by 100%
-Overflowing Quiver (Q): Whenever you would gain a Withering Fire charge from killing a Minion or Hero while at maximum charges, it is automatically fired.
-Ranger's Ambush (E): Using Haunting Wave to teleport refills all charges of Withering Fire
-Envenom

Level 7:
-Unstable Poison (Trait): Minions and Mercenaries that die under the effects of Black Arrows explode, dealing 75 damage to nearby enemies
-Life Drain (W): Shadow Dagger heals you for 10(+?) each time it spreads to a new enemy.
-Follow Through
-Mercenary Lord
-Shade Form (E): Haunting Wave grants Stealth for 3 seconds. Activating the teleport does not break the Stealth

Level 10:
-Wailing Arrow (R): (90s CD) Shoot an arrow that explodes for 200(+?) damage and silences enemies for 2.5 seconds. Can be reactivated to detonate the arrow early.
-Possession (R): (4s CD) Force an enemy Minion to fight for you. It gains 20% Attack Damage and Health. Cooldown increased to 20 seconds when used on Catapults.

Level 13:
-Overwhelming Affliction (Trait): Black Arrows now also applies to Heroes, slowing their Movement Speed by 5% for the duration. Stacks up to 5 times.
-Evasive Fire (Q): You gain 10% Movement Speed for 2 seconds whenever an enemy is hit with Withering Fire, stacking up to 30%
-Splinter Shot (Q): Withering Fire hits a second target for 19(+?) damage.
-Spell Shield

Level 16:
-Windrunner (E): After you teleport from Haunting Wave, you can cast a second one for free within 2 seconds
-Cold Embrace (W): Shadow Dagger makes enemies Vulnerable, taking 25% more damage, but the range of Shadow Dagger is reduced by 25%
-Will of the Forsaken: Activate to become Unstoppable and gain 30% Movement Speed for 3 seconds
-Blood for Blood

Level 20:
-Deafening Blast (R): Enemies at the center of Wailing Arrow's explosion take 50% more damage and are silenced for twice as long
-Dark Lady's Call (R): Increases the Attack Damage and Health bonus to 30% and allows Possession of Enemy Mercenaries with a 20 second cooldown
-Fury of the Storm
-Bolt of the Storm