Enter a battle fury as a bonus action, gaining resistance to physical weapon damage and bonus melee damage.

Make one additional melee weapon attack as a bonus action while frenzied, then suffer exhaustion when the rage ends.

He can enter a frenzy while raging. On the first turn of the frenzy, he can make a single melee weapon attack as a bonus action. When the rage ends, he suffers one level of exhaustion.

He can enter a frenzy while raging and make one melee weapon attack as a bonus action on each turn after entering the frenzy. When the rage ends, he suffers one level of exhaustion.

Make two greataxe attacks with the Attack action.

Make a melee weapon attack against a creature within 5 feet that hits him with a melee attack.

Attempt to frighten one creature within 30 feet that can see or hear him.

While not wearing armor, his Armor Class equals 10 + Dexterity modifier + Constitution modifier. Warforged Integrated Protection adds a further +1 AC.

Choose two skills from the barbarian skill list. The Metal Orc is proficient in Perception and Survival.

He has advantage on Dexterity saving throws against effects he can see, such as traps and spells.

He can attack recklessly, gaining advantage on melee weapon attack rolls using Strength during the turn, while attacks against him have advantage until his next turn.

Choose a primal path. The Metal Orc follows the Path of the Berserker.

He can make two attacks whenever he takes the Attack action on his turn.

His speed increases by 10 feet while he is not wearing heavy armor.

He has advantage on initiative rolls.

If surprised at the start of combat, he can act normally on his first turn if he enters his rage before doing anything else.

While raging, he cannot be charmed or frightened. If already charmed or frightened when he enters his rage, the effect is suspended for the duration.

He can make a Constitution saving throw to avoid dropping to 1 hit point when reduced to 0 hit points while raging. The DC starts at 10 and increases by 5 each time until he finishes a short or long rest.

He can maintain a rage until he falls unconscious or chooses to end it. He no longer needs to attack a hostile creature or take damage each round to continue raging.

When a creature within 5 feet hits him with a melee attack, he can use his reaction to make a melee weapon attack against that creature.

Once per turn when he scores a critical hit with a melee attack, he rolls two additional weapon damage dice.

The Metal Orc retains the respect and trust of soldiers who recognize his military bearing. He can invoke his rank to exert influence over other soldiers and requisition simple equipment or temporary assistance, subject to the approval of commanding officers.