DnD 5.5e - Path of the Berserker - Barbarian subclass - 2024 PHB

Barbarians who walk the Path of the Berserker direct their Rage primarily toward violence. Their path is one of untrammeled fury, and they thrill in the chaos of battle as they allow their Rage to seize and empower them.

Source: 2024 Player's Handbook

Level 3: Frenzy

If you use Reckless Attack while your Rage is active, you deal extra damage to the first target you hit on your turn with a Strength-based attack. To determine the extra damage, roll a number of d6s equal to your Rage Damage bonus, and add them together. The damage has the same type as the weapon or Unarmed Strike used for the attack.

IMPLEMENTATION:  Changed the rage at level 3. Now it unlocks two new reckless attack called "Frenzied Reckless Attack" and "Unarmed Frenzied Reckless Attack" that deal extra damage as described above (2d6 at level 3, 3d6 at level 9, 4d6 at level 16). They are usable only during rage. You still have the basic reckless attack in case you don't want to deal extra damage or you want to use it outside of rage.

Level 6: Mindless Rage

You have Immunity to the Charmed and Frightened conditions while your Rage is active. If you’re Charmed or Frightened when you enter your Rage, the condition ends on you.

IMPLEMENTATION:  The rage makes you immune to those condition. Also, now when you rage you end the Charmed and Frightened condition. You also unlock a new toggable passive in the "passives" hotbar called "Fearful Rage". While this passive is active, if at the start of your turn you have the "Fearful" condition, you automatically rage, ending the condition. If the passive is active but you don't have the resources to rage, you won't rage and you'll remain fearful. (Thanks to CatDude55 for the idea and for where to start to look for a solution)

Since in the base game you cannot take any action when you have the "Fearful" condition, this is the best way i found to make it work.

Level 10: Retaliation

When you take damage from a creature that is within 5 feet of you, you can take a Reaction to make one melee attack against that creature, using a weapon or an Unarmed Strike.

IMPLEMETATION:  Added two new reaction: one for weapon Retaliation and one for unarmed Retaliation. When you take damage in melee range from an