Path of Anti-Magic

Anti-magic barbarians have found a niche where they are aware and able to effect the weave, and yet choose not to bend it, but prevent it from being altered. Their bodies, blood, and weapons have been attuned to the magic which flows all throughout the natural world. Their fury has allowed them to stand toe-to-toe with those who can alter the fabric of reality itself, and strike fear into their hearts.

Mystic Aggression

At 3rd level, when a creature you can see casts a spell, you may choose to use your reaction to go into a rage if you are not already raging, move up to half of your movement speed toward the caster, and make a single melee weapon attack if the target is within range.

Anti-Magic Shout

At 6th level while raging, if a creature you can see casts a spell, you may use your reaction to attempt to interrupt the casting of the spell. If the spell is of 3rd level or lower, the spell fails and has no effect. If the spell is of 4th level or higher, make a constitution check. The DC equals 10 + the spells level. On a success, the spell fails and has no effect. You may use Anti-Magic Shout a number of times per long rest equal to the amount of times you are able to enter a rage. At 20th level, you are able to perform Anti-Magic Shout 8 times per long rest

Mystic Smite

At 10th level, after successfully countering a spell with your Anti-Magic Shout ability, you gain a d10 of the damage type of the spell to store for up to 1 hour. If the dispelled spell does not deal damage, it is stored as force damage. If you hit a creature with a melee weapon attack, you may choose to expend 1 of the stored d10 and add it to the damage roll. Additionally, you may choose to expend 2 or more d10's in order to force a dexterity saving throw on creatures within a 15-foot radius centered on yourself which you are excluded from. On a failed save, each creature takes a number of d10's damage equal to the number expended in any of the damage types stored, or half as much on a successful save.

Mystic Resilience

At 14th level while raging, you gain resistance to all damage caused by spells as well as to bludgeoning, piercing, and slashing damage from magic weapons. Additionally, you gain advantage on all saving throws made to resist spell effects.