When Arduin's HP is below 50% and he takes damage, every skill or normal attack hit restores 4% of his HP for 8s. (Cooldown: 25s)

Arduin sends out an energy wave that deals 250 (+100% of AD) physical damage to enemies along its path and slows them by 40% for 2 seconds.

If Arduin hits an enemy hero, a creep, or a jungle creep, he activates the second phase of his skill.

Arduin summons a shield that absorbs damage equal to 15% of his own max HP and lasts for 5 seconds. When the shield is summoned, Arduin deals 250 (+100% of AD) magic damage to nearby enemies.

Within 8 seconds of summoning his shield, Arduin's next 3 normal attacks deal an additional 125 true damage (double the damage is dealt to jungle creeps).

Every time his normal attack damages an enemy, the cooldown time of his skill 3 is reduced by 1 second.

Arduin becomes unstoppable and gains control immunity. He flings his axe forward, dealing 300 (+120% of AD) physical damage and stunning nearby enemies for 1 second.

His armor then charges towards the axe, dealing 300 (+120% of AD) physical damage to surrounding enemies.

Arduin swings his axe, sending out an energy arch that deals 250 (+100% of AD) physical damage and slows enemy movement speed by 40% for 2 seconds.

If Arduin hits an enemy hero, he can recast the skill.