Unnamed Fighter Subclass ED

FECK YEAH

Magical Recovery

Once per long rest, if you use your Second Wind ability and you have taken damage because of a magical effect or spell in this turn, you roll the die with advantage.

Vigilant

You can add or double your proficiency in Insight(Wisdom) checks related  identifying lies about magical effects or in rolls to notice if someone is charmed. 

Neutralize

If you use Action Surge to attack, as a part of an attack action you can land debilitating blow against certain magical creatures often used by mages, such as elementals, undeads and constructs if the creature hasn't taken a turn in the combat yet. If you land the attack successfully, the creature subtracts your proficiency from it's AC and saving throws, while losing 15 feet from it's movement for a number of turns equal to your INT modifier (to a maximum of 5).

Mage Scourge

You have learned  casting of spells is often second nature for you and your movements and attacks target typical weaknesses in spellcaster's physique. Successfully landing an attack roll at a spell caster leaves it unable to cast cantrips in it's next turn and renders one spell slot of the level of your INT modifier (to a maximum of 5) or lower useless.