Path of the Dragon Hunter

Barbarians who walk the path of a Dragon Hunter are driven by an all-consuming hatred for Dragons and those who revere them. They are relentless hunters, training their bodies and minds to withstand the Dragonkind and fell them. Their rage is a focused, burning fury, hones to a sword's edge in their never-ending pursuit of Dragons.

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Draconic Sense

At level 3, you gain advantage on Wisdom (Perception) and Wisdom (Survival) checks to track or spot Dragons and those who revere them.

Dragon Bane

Your weapon attacks deal additional damage equal to your proficiency bonus against Dragons, creatures associated with Dragons (like Dragonborn, Kobolds, Lizardfolk, etc.), and anyone who likes Dragons (as determined by the DM).

Dragon's Resilience

Your training and relentless hatred have hardened you against the petty tricks that Dragons use. 

You gain resistance to one of the following damage types: Acid, Cold, Fire, Lightning, or Poison. You can change this resistance when you finish a long rest.

You gain Proficiency in the Survival skill, Expertise if you are already proficient.

Wyrmslayer's Tenacity

Your determination and ferocity allow you to withstand the mightiest of foes.

While raging, you can use your reaction to reduce the damage of a breath weapon or other AOE by an amount equal to 1D12 + your Constitution Modifier + your Barbarian Level. You can use this feature a number of times equal to your proficiency bonus; and you regain all expended uses when you finish a long rest.

Dragon's Doom

You become the bane of Dragons, a living nightmare to all who align themselves with those creatures. 

While Raging, you can use an action to focus your fury against any Dragon or creature that likes Dragons within 60ft of you that you can see; or any Dragon or Dragon-Aligned creature within 60ft of you that can see you. Each targeted creature must make a Wisdom saving throw (DC = 8 + your Proficiency bonus + your Strength Modifier). On a failed save, the creature is Paralyzed for one minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Once you use this feature, you cannot use it again until you finish a long rest.