Path of Wrath

Barbarians are always angry. But these barbarians are always full of wrath. They had some events happen to them in the past that caused them to want to cause as much destruction as possible.

Wrathful Rage

At 3rd level, you now battle with the wrath of a thousand armies. While in rage you now gain the same bonus to your attack rolls as you have for your damage. When you get hit you add half of your proficiency bonus (rounded up) to attacks rolls made against that creature until the end of your next turn.

Raging War Cry

At 6th level, you unleash a war cry when you rage that bolsters allies. When you rage you can choose to use a war cry, giving you and any other creatures of your choice within 30 ft. of you the ability to use one more attack when taking the attack action. If there is a feature that lets someone make another attack action (such as fighters Action Surge) this extra attack is not applied. This feature can be used twice per short rest.

Body of Wrath

At 10th level, when raging your wrath strengthens your body. While raging you are now resistant to all damage except psychic. When you rage choose one damage type other than psychic. You become immune to that type of damage. If it is bludgeoning, slashing, or piercing damage, you are only immune to non magical sources. Otherwise you are resistant. 

Mind of Wrath

At 14th level, all that is in your mind is wrath and destruction. When raging you are now resistant to psychic damage. Your raging War Cry can be used 4 times per long rest. When you rage you can enter a Rampage. While in a rampage you have an extra +3 to attack, a +4 to damage, and immunity to being charmed or frightened. You can only use this ability once per long rest.