Best items for Arduin are: Mantle of Ra, Gilded Greaves, Shield Of The Lost, Medallion of Troy, Mail of pain, Blade of Nirvana.
Best Arcana for Arduin are: 10 Indomitable, 10 Benevolence, 10 Valiance.
Best Rune for Arduin are: Afata + Lokheim.
Arduin will enter Bloodlust mode for eight seconds if his health drops to less than 50%. When Arduin is in Bloodlust mode, each enemy damage dealt by his abilities or standard attacks causes him to regenerate 4% of his maximum HP. The cooldown for this effect is 45 seconds.
Skill 1: REND
When Arduin swings his axe, an energy arch is launched that slows opponent movement by 40% for two seconds and deals 250/300/350/400/450/500(+1.0 AD) physical damage. Arduin can also slam his axe into the ground to deal 250/300/350/400/450/500 (+1.0 AD) physical damage and knock opponents into the air for a second if he hits an enemy hero.
Skill 2: UNDYING PROTECTOR
Arduin conjures a shield with 12% of his maximum HP and a 5-second duration. Arduin deals 200/225/250/275/300/325(+0.75 AD) magic damage to nearby opponents when the shield is called. cause an additional 100/125/150/175/200/225 true damage within 8 seconds, and each time his normal attacks cause damage to an enemy, Cull’s cooldown time is shortened by 1 second.
Skill 3: CULL
Arduin hurls his axe forward, causing 300/425/550 (+1.2 AD) physical damage and 1.5 seconds of stunned effect on the first opponent struck. He then leaps toward the location of the axe, causing 300/425/550 (+1.2 AD) physical damage to the adversaries close by. Control effects won’t prevent Arduin from using Cull after it has been activated.