When Bjorn rages, he can frenzy and make a single melee weapon attack as a bonus action on each of his turns for the duration. When the rage ends, he suffers one level of exhaustion.

Bjorn can enter a furious battle state for up to 1 minute, gaining bonus damage on Strength-based melee attacks, resistance to bludgeoning, piercing, and slashing damage, and advantage on Strength checks and Strength saving throws while raging. He can rage 3 times per long rest.

While not wearing armor, Bjorn's Armor Class equals 10 + his Dexterity modifier + his Constitution modifier.

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

Bjorn has advantage on Dexterity saving throws against effects he can see, such as traps and spells. He cannot benefit if he is blinded, deafened, or incapacitated.

Bjorn has chosen a Path of the Berserker, embracing battle fury as a weapon and a warning to his enemies.

Bjorn has survived enough brutal combat to increase his toughness through experience. The level 4 ability score improvement is noted in his statistics as already reflected in the provided scores.

Bjorn can attack twice, instead of once, whenever he takes the Attack action on his turn.

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

Bjorn's speed increases by 10 feet while he isn't wearing heavy armor.

Bjorn has learned to react quickly in the opening moments of battle. He has advantage on initiative rolls.

Bjorn has gained another improvement through training and hard-won experience. The level 8 ability score improvement is noted in his statistics as already reflected in the provided scores.

Because of his military service, Bjorn can usually secure lodging, food, or brief assistance from soldiers, guards, or veterans who recognize his old unit or respect his service.