From Liquipedia Hearthstone Wiki
A hero power is a unique ability dependant on hero. These abilities can be used once per turn and cost two mana. Each class has its own hero power, where these skills tend to characterize the class itself.
- Steady Shot
- Lesser Heal, Mind Spike (after casting the spell Shadowform), Mind Shatter (after casting a second Shadowform)
- Dagger Mastery
- Totemic Call
- Life Tap, INFERNO! (after playing Lord Jaraxxus)
- Armor Up!