After scoring a critical hit or dropping an enemy to 0 hit points, Wren makes an additional melee attack as a Bonus Action while raging.

Wren can enter a Rage as a Bonus Action. While raging, he gains resistance to bludgeoning, piercing, and slashing damage, advantage on Strength checks and Strength saving throws, and a bonus to melee weapon damage. His Rage lasts up to 10 minutes and ends early if he wears heavy armor or fails to attack or take damage in accordance with the feature.

Wren can make one additional attack as part of the Attack action. He can also make one weapon attack as a Bonus Action after entering Rage if he has no other use for that Bonus Action.

Wren can move up to half his Speed when he takes a Bonus Action to enter his Rage, without provoking Opportunity Attacks.

When Wren scores a critical hit or reduces a creature to 0 hit points with a melee attack while raging, he can make one additional melee weapon attack as a Bonus Action.

When a nearby enemy attacks one of Wren's allies, he uses Sentinel to punish the enemy or locks the attacker in place with an Opportunity Attack.

Wren attacks twice with his greataxe, using Reckless Attack when the opening is worth the risk. Against a dangerous target, he may combine it with Brutal Strike and Great Weapon Master benefits.

Wren enters a Rage and immediately moves up to half his Speed without provoking Opportunity Attacks, placing himself between an enemy and an ally.

While not wearing armor, Wren's Armor Class equals 10 + his Dexterity modifier + his Constitution modifier. He normally uses scale mail for better protection, giving him AC 16.

Wren has Weapon Mastery with four weapons and currently applies mastery properties to the greataxe, handaxe, spear, and shortbow. He can change his chosen mastery weapons after a Long Rest.

Wren has advantage on Dexterity saving throws against effects he can see, such as traps and spells. He does not gain this benefit while Blinded, Deafened, or Incapacitated.

Wren chooses the Path of the Berserker. His rage is a deliberate, terrifying expression of protective fury rather than an uncontrolled loss of judgment.

While raging, if Wren uses Reckless Attack, the first hit he scores on his turn with a Strength-based attack deals extra damage equal to one roll of his weapon's damage die. The extra damage is not doubled by critical hits.

Wren gains the Great Weapon Master feat, allowing him to draw or stow a weapon as part of an attack, and granting additional benefits when he scores a critical hit or reduces a creature to 0 hit points with a melee weapon.

Wren's Speed increases by 10 feet while he is not wearing Heavy armor. His walking Speed is 40 feet in scale mail.

Wren gains the Extra Attack feature, allowing him to attack twice when he takes the Attack action. He also gains the ability to move up to half his Speed immediately before or after each attack as part of the same action.

While raging, Wren cannot be Charmed or Frightened. If he is already affected by either condition when he enters his Rage, the effect is suspended for the duration.

Wren has advantage on Initiative rolls. If he is surprised at the start of combat but is not Incapacitated, he can act normally by spending a use of Rage when the combat begins.

Wren gains the Sentinel feat, allowing him to hinder enemies he hits with Opportunity Attacks, make Opportunity Attacks against creatures that Disengage, and make a special reaction attack when a nearby creature attacks someone other than him.

If Wren uses Reckless Attack and misses with all attacks on his turn, he can forgo Advantage on one attack to make that attack deal extra damage and impose an additional effect, such as pushing the target or reducing its Speed.

When Wren is reduced to 0 hit points while raging but is not killed outright, he can make a DC 10 Constitution saving throw. On a success, he drops to 1 hit point instead. The DC increases by 5 each time he uses this feature until he finishes a Short or Long Rest.

Wren gains the Tough feat, increasing his hit point maximum by twice his character level. His total hit points are 137 instead of the normal 113 for a level 12 barbarian with Constitution 14.

Wren has the Savage Attacker Origin feat. Once per turn when he hits with a weapon, he can roll the weapon's damage dice twice and use either result.