Ongolth

Bearing the ancestral power of the Golth that once roamed the mountain halls, the Ongolth barbarians are fierce, resilient warriors that face down endless hordes of malevolent forces. They often have to rely solely on themselves and their battle skill, balancing defence, survivability and offensive tactics. The Ongolth powers transform them into unstoppable warriors, set only on purging the evils from below the mountain.

Ongolth form

At 3rd level, the echoes of magic of the ancient ritual starts manifesting. When you enter rage, your body takes on semi-stone like characteristics. Using unarmed attacks deals an extra 1d6 bludgeoning damage.This damage increases at 11th level, to 2d6 and at 18th llevel to 3d6. Unarmed attacks count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage. While you're raging, you also get advantage against beeing stunned.

Heir of stone

At 3r level, you gain the ability to use rock terrain to your advantage.

• When climbing rock or stone, you gain climbing speed equal to half of your walking speed, includig on upside down surfaces.
• You ignore difficult terrain caused by stone or rock, including slippery surfaces.
• Travelling in rocky or mountanous terrain doesn't cause exhaustion, or increase existing exhaustion.

Ongolth armor

At 3rd level you permanently add half of your proficiency to your armor class.

Neverending combat

At 6th level, the Ongolth magic starts leaching out lifepower of the enemies to keep the warrior in fight. While your are raging, you can use a bonus action to roll your hit dice and gain temporary hit points equal to your roll. 
You can only use this ability after you succesfuly damage an enemy with your melee attack.

Immortal icon

The magic ot the Ongolth grows stronger as the warrior ages. While transformed in your combat form, you shrugh of damage that would kill a lesser man. From 10th level, you have resistance to necrotic and acid damage while you rage.

While you are raging, you can use your reaction to cancel a critical hit against you.

Eternal hunter

Your Ongolth form shaped your destiny, but it was your battlefield skill that made you who you are. Decades of hunting dark cretures that lurk below the surface turned you muscles to steel and mind to an edge.

At 14th level, you gain 30 ft. tremorsense.

You can use your bonus action to gain additional 25 ft. of movements and remove any grappled, incapatitated or restrained status.
Your movement speed cannot be reduced by magical means until the start of your next turn.
You can use the Eternal hunter ability once per one activation of rage.