Level 1: Chill Soul - Karsh steals the essence of life from his enemies with every blow and is healed for 20% of the damage. His attacks cause all nearby enemies to -30% damage for 20 seconds. If Karsh takes fatal damage he instantly regains 25% of his maximum health instead of dying, this effect can only be triggered every 25 seconds. (Passive)
Level 3: Shadow Step - Karsh walks on the path of death and teleports himself to the selected location. Enemies at the destination are temporarily paralyzed with fear. Left click on target area.
Level 5: Entrance to the Crypt - Karsh summons a Barrow which can be used by Barrow Wights as a tunnel network between barrows. When near the barrow, Karsh and Barrow Wights gain +25% damage. Left click on target location.
Level 7: Voice of the Wight - Enemies in the area of the selected crypt lose 50% of their damage for 10 seconds and run away in fear after that. Left click on allied Barrow.
Level 10: Soul Thief - The whispering dread of Angmar steadily withdraws the light of life from his victims. Enemy units nearby are permanently damaged and transfuse their health to Karsh. Karsh is slowed down by 50% for the duration of this ability. Left click to activate.
Karsh can receive the following upgrade:
Might of the Witch-King - The might of the Witch-King will be bestowed to a hero gifting them with additional power for 120 seconds. For a limited time, Karsh is healed by 75% of his dealt damage