Path of the Hammer

The barbarians who decides to follow this path imbue their favored weapon with might they could not match with any other weapons. The Path of the Hammer teaches the strongest wielder of any type of hammers to strenghten their skill at a hammer and using them to their full potential.

Bludgeoning Strike

At 3rd level you learn how to minimize your weakest blows with your favored weapon. You can add your constitution modifier to your damage rolls a number of time double your proficiency bonus made with a weapon that deals bludgeoning damage. Also, when you make a melee weapon attack that deals bludgeoning damage, you can reroll 1 and 2 on the damage die and you must take the new result. 

Crackling Strike

Beginning at 6th level, you can channel your wrath into a massive, devastating strike to your surroundings. You can use your action to slam the ground with a weapon that deals bludgeoning damage and let the crackling waves hurt every creature within 5 feet of you, who must make a Strength or Dexterity Saving Throw (their choice) or fall prone. A target takes 2d8 + your strength modifier of the weapon type on a failed save, or half as much damage on a successful one. The DC is equal to 8 + your proficiency bonus + your strength modifier. 

You can use this feature once per short or long rest. At 14th level, you can use this twice.

When you reach certain levels in barbarian, the number of dice for Crackling Strike increases : 3d8 at 10th level and 4d8 at 14th level.

Brutal Defense

Beginning at 10th level, you use your berserk state to stand your ground longer. When you enter a rage with your bonus action, you also gain temporary HP equal to 10 + half your total barbarian level.

Bludgeoning Fervor

Beginning at 14th level, your specialization of the hammer makes you a dangerous foe in the battlefield. When you make a melee weapon attack with a weapon that deals bludgeoning damage, you can cause this attack to deal the maximum damage. 

You can use this feature a number of times to equal your strength modifier. You regain all expended uses of this feature after finishing a long rest.