Path of the Spine Ravager

The Path of the Spine Ravagers, are for those who want to prove themselves to their gods of war. The Spine Ravagers, specialize in wearing bulky , spiked armor and throwing themselves at their enemies, striking them with their body and giving themselves up to the fury of battle. 

This subclass was created by TorchbearerGaming, and Nerd Immersion who created the base for the subclass. I'm porting this over to dnd beyond for easier use, I do not take credit for making this subclass all credits go to TorchbearerGaming and Nerd Immersion. 

Spiked armor training

Starting when you choose this path at 3rd level, you have trained to use specialized armor. You gain proficiency in heavy armor and all forms of spiked armor and shields.
In addition, you also suffer no penalties for sleeping in armor. Lastly, you can enter a Rage when wearing Heavy armor.

Bristling Fury

At 3rd level, while you are wearing spiked armor and raging, creatures that touch you or hit you with a melee attack while within 5 feet suffer piercing damage equal to your rage damage bonus instead of the normal damage caused by your spiked armor.

Reckless Abandon

At 6th level, you attack with little regard for your own protection. Wholly relying on your armor and grit to persevere. Whenever you use the Reckless Attack feature, you gain temporary hit points equal to your Constitution modifier. If you are raging you can increase the number of temporary hit points gained by your proficiency bonus.

Barbed Blitz

At 10th level, You have learned how to capitalize on your momentum as well as the lifeless forms of your defeated enemies. When you move at least 20 feet on your turn before making a melee weapon attack with your armor spikes, that attack deals an additional 2d10 piercing damage a hit. If you reduce a medium or small creature to 0 hit points with this attack, they are impaled upon your spikes until the start of your next turn, providing you with cover. A medium creature grants three-quarters cover and a small grants half cover.
In addition you can use the dash action as a bonus action while raging.

Keep your enemies closer

Starting at 14th level, you have embraced the concept that your entire body is a weapon. When you successfully grapple a creature, that creature suffers piercing damage equal to your Strength modifier. A creature you are grappling takes, piercing damage equal to your Strength modifier whenever it attempts to escape your grapple. If you choose to grapple a creature with both hands, you can use an action on your turn to hug the creature close and shake vigorously. The creature must make a Strength saving throw (DC equal to 8 + your Strength modifier + your proficiency bonus) or suffer 8d8 piercing damage + your Strength modifier on a failed save and on a success they take half, as much damage and can attempt to break the grapple as a reaction. 

Add your rage damage bonus to all damage dealt by this feature while raging.