Spellbreaker

 This Order of Mages was created by a Magic User who wants that the normal Civilian in his Homeland don't have to fear Magic User who abuse their Powers to do evil acts.

Spellbreaker Training

2nd-level Spellbreaker feature

You gain proficiency with light and medium armor, and you gain proficiency with the Longsword.

You also gain proficiency in the Arcana skill if you don’t already have it and also advantage at Arcana skillchecks.

Spell Negation

If an Enemy use a Spell within Melee reach you can use your reaction to Melee attack the Caster and when the Attack hits must the enemy make a Constitutions Saving Throw against a DC of 10+ Half Damage. By a failed Save the Spell is interrupted and the Spellslot also the Materials used for the spell spend.

The Spells Counterspell and Dispel Magic are automatically learned at Level 5.

Magical Attack

6th-level Spellbreaker feature

You can attack twice, instead of once, whenever you take the Attack action on your turn. Moreover, you can cast one of your cantrips in place of one of those attacks.

Arcane Knowlegde

10th-level Spellbreaker feature

You can make a Arcana check to specify what Spell and at what Spelllevel a Enemy use one of it's Spells. The DC is 10+ Spelllevel.

This can be used right befor you use Counterspell to define at what level you have to use your Counterspell.

All Checks of Dispel Magic have Advantage until the Player has more than 1 point of Exhaustion.

Magical Disturbance

14th-level Spellbreaker feature

You can use on of your Spellslots to create a Anti-Magic-Dome for 1 minute with a radius of 30 feet yourself in the middle.

All Spells from enemies below that Spellslotlevel don't have any use within the Dome.

you can still cast Spell within the Dome, 

You can use Counterspell and Dispel Magic at will at Spelllevel 3.