Path of Eldritch Fury

There exists a small sect of barbarians who, not content with the power of their muscles and a greataxe, are willing to resort to drawing on forbidden magics in order to bolster their abilities. These bold few who wish to follow the Path of Eldritch Fury seek out powerful extraplanar entities in order to obtain abilities that most would consider highly unnatural. Barbarians who follow this Path often attempt to impress these entities with displays of martial prowess and blinding rage. A potential patron will often confer upon a sufficiently impressive barbarian a small sliver of their power. Though they do not gain nearly the same level of magical might as the warlocks who inspired the first followers of this Path, the barbarians who follow this Path are able to wield their magical abilities with much more freedom, as their power is freely given to them by their patron rather than being contingent on a deal made between mortal and patron.

Eldritch Fury

The magical power granted to you by your patron manifests itself in the form of two 1st level spell slots. You regain all expended Eldritch Fury spell slots following a short or long rest. The level of these spell slots increases along with your barbarian level as shown in the table below. You know two cantrips and three 1st level or higher spells of your choice from the warlock spell list, plus the cantrips Eldritch Blast and Eldritch Strike. These spells must be of a level that you can cast using your Eldritch Fury spell slots, and at least three of these spells and/or cantrips must deal damage as their primary effect. Strength is your spellcasting modifier for these spells. When you gain a level in this class, you may choose one spell that you know from the warlock spell list and replace it with another spell from the warlock spell list, which must also be of a level that you can cast using your Eldritch Fury spell slots.

 

Barbarian Level	Eldritch Fury Spell Slot Level
3	1
7	2
13	3
19	4

Spellcasting

The power granted to you by your patron grants you limited spellcasting abilities. You do not cast spells through your traditional spell slots, but rather through your Eldritch Fury spell slots (displayed under the Eldritch Fury subclass feature as opposed to with your traditional spell slots). For the purposes of any mechanic that would require you to expend a spell slot, disregard the traditional spell slots displayed on your character sheet and use your Eldritch Fury spell slots instead. If you multiclass into a class that has access to spellcasting, you no longer need to disregard your traditional spell slots, and can use them as normal in addition to your Eldritch Fury spell slots.

Eldritch Aura

Starting at 3rd level, an aura of eldritch power surrounds you when you rage. While you're raging, if a creature within 10 feet of you attacks you, that creature must make a Wisdom saving throw against a value equal to 10 plus your Strength modifier plus your proficiency bonus. On a failed save, a creature suffers a -2 penalty to attack and damage rolls made against you until the start of its next turn.

Eldritch Rage

Starting at 6th level, you can use the power of your rage to channel large amounts of eldritch magic. As a bonus action, you can expend a use of Rage to regain an expended Eldritch Fury spell slot. Additionally, when you would enter a rage, you can expend an Eldritch Fury spell slot in place of a use of Rage.

Eldritch Power

Starting at 10th level, the intensity of your rage imbues your weapons with eldritch power. While you're raging, your weapon attacks deal additional force damage equal to your proficiency bonus. Additionally, while you're raging, any damage dealt by nonmagical weapons you wield counts as magic for the purpose of overcoming resistance or immunity to nonmagical damage. 

Eldritch Focus

Starting at 14th level, you have become so well-versed in channeling eldritch magic that you can to do so even in the midst of a white-hot rage. While you're raging, you can cast and maintain concentration on spells, but only using your Eldritch Fury spell slots. Cantrips can be cast as normal while raging, and do not require you to expend Eldritch Fury spell slots.