Barbarian

You can enter a frenzied rage. If you do so, for the duration for of your rage you can make a single melee weapon attack as a bonus action on each of your turns after this one. When your rage ends, you suffer one level of exhaustion.

You can't be charmed or frightened while raging. If you are charmed or frightened when you enter you rage, the effect is suspended for the duration rage.

When being attacked by a melee attack, you may attempt to parry the attacker. This must be done before damage is resolved, at the time of the declaration of attack.

When not enraged, you may use your reaction to parry the attack by rolling a 1d6 and adding the result to your AC value.

When enraged, your senses are heightened and so may defend against each attack, but with your mind clouded it is less effectual, when you are attacked by a Ranged Weapon Attack, or a Melee Weapon Attack you may attempt to parry. Roll a 1d4, Until the start of your next turn, add the result of the roll to your AC modifier.

Your primal instincts surpass natural speed, and your rage calls for vengeance from any threat.

If you would take damage damage from a creature within 5 feet of you, you can use your reaction to attempt to make a melee weapon attack against the attacking creature.