The Heroes in Clash of Clans, The Barbarian King, the Archer Queen, the Grand Warden and the Royal Champion have a special ability from level 5 onwards. The Barbarian King's Iron Fist At maximum ability level the Iron Fist summons up to 28 Barbarians and gives the Barbarian King increased damage and speed. He also gets a health boost, unless his health bar is still full.
To activate the Iron Fist during a battle, you first have to deploy your Barbarian King on the battlefield. Then, simply tap again on the Barbarian King Icon to activate the ability.
The Archer Queen's Royal Cloak When using the Royal Cloak ability, the Archer Queen becomes invisible and untargetable temporarily; any defenses attacking her will stop and find new targets. In addition, a group of fierce Archers are called in to reinforce their Queen upon activation.
Like the Barbarian King, the Queen receives a health boost if she has already sustained some damage, and gains increased damage for the duration of the ability.
To activate the Royal Cloak, tap the Archer Queen's icon again after deploying her.
The Grand Warden's Eternal Tome Unlike the other Heroes, the Grand Warden has a passive ability, the Life Aura. It activates upon deployment and grants additional health to any troop within range, but only for as long as they remain inside the area of effect.
The Grand Warden's ability, the Eternal Tome makes all troops around him invincible for a duration.
Upgrade the Warden to increase the power of both abilities.
You can choose to set the Grand Warden in air or ground mode before deploying him.
The Royal Champion's Seeking Shield
The Royal Champion, similarly to Grand Warden, is able to jump over the walls.
Her unique ability called Seeking Shield, sends her shield flying, dealing damage to the 4 nearest defensive buildings. Her shield will fly across the map, if needed, to make sure it always hits.
Activating her ability restores a portion of her health, but will not grant her any other buffs.