Path of the Elemental

Some barbarians fall asleep and dream of the arcane, believing they would be great sorcerers if born into a magical family. The will of these barbarians manifests into their rage, turning dreams into reality. All who follow this path do not accept that they are normal brutes, but are very capable of much more. Barbarians that deny their nature in this way are often met with adversity, only fueling their anger.

Magic Rage

Starting when you choose this path at 3rd level, you may choose one.

• Acid
• Cold
• Fire
• Poison

While raging, your blood manifests into the chosen type and you gain resistance against that type. When you use your bonus action to enter rage, you may use your action to cut yourself. Deal 1d10 type damage to yourself and a target within 5 feet. You may only use this ability if you are holding a weapon that deals slashing damage. 

Slow Boil

Beginning at 6th level, all attack rolls you make against a target are at disadvantage. If your current HP is lower than half your max HP rounded down, all attack rolls you make against a target are at advantage. Whenever you take a long rest, you may choose to not recover any hit points.

Magic Blood

Beginning at 10th level, you always have resistance against your chosen type. As an action, you may cut yourself. Deal 1d10 type damage to yourself and a target within 5 feet. You may only use this ability if you are holding a weapon that deals slashing damage. Whenever you enter rage on the same turn you use this ability, add your Barbarian level to the damage. 

Honorary

Beginning at 14th level, you gain a cantrip based on the type you picked.

• Acid - Acid Splash 
• Cold - Ray of Frost
• Fire - Fire Bolt
• Poison - Thorn Whip

Your spell saving DC is equal to 8 plus your proficiency bonus plus your Strength score. Your spell attack bonus is equal to your proficiency bonus plus your Strength score.