Mage Hunter

Either through the training from an ancient order, or just raw enmity these warriors learn to hunt down and eliminate mages, apostates, and magical constructs. They pursue their charges will relentless vigor, and can even learn to shut down the conjurations and spells of those they oppose.

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Relentless Hunter

When you choose this archetype at 3rd level, you gain proficiency in the Arcana skill and gain advantage when attempting to track spellcasters and magical constructs.

Abhorrence of Magic

Such is your fury towards spellcasters that when you see one cast their incantations you move to intercept them.

At 3rd level, When an enemy within range casts a spell you may use your reaction to move 10ft towards them. Any effects of the spell are applied before you move.

At 7th level, movement from Abhorrence of Magic do not trigger opportunity attacks.

At 10th level, movement from Abhorrence of Magic is applied before a spell is resolved.

Spellbreaker

You rage against the conjurations of enemy wizards, shielding you from some of the damage you would take

At 7th level, If you would take damage from a spell you may use a reaction to reduce the damage by 2d6, you may use this ability a number of times equal to your proficiency modifier and regain any expended uses on a long or short rest. This damage reduction is applied after the spell is resolved, so for spells such as magic missile, it is resolved after all the bolt damage has been rolled.

Ward Piercer

You learn to break through magical wards and unnatural toughness with the right techniques.

At 10th level, when you swing with a melee weapon you may count your weapon as magical for the purposes of overcoming resistance and immunity to non-magical attacks and damage. In addition, you ignore any additional AC granted by spells such as Mage Armor or Haste. 

Scorn of Sorcery

Your scorn for magic of all kinds allows you to reach out and snuff our the conjurations of spellcasters, leaving them vulnerable.

At 15th level, you gain the use of the Counterspell spell at level 4 a number of times equal to your proficiency modifier, with your spellcasting ability for this being your Constitution. You regain any expended uses of this ability after a long rest. 

Null Field.

At 18th level, once per long rest you may use the Antimagic Field spell without using a spell slot.