Stop That!

Your unbridled hatred for spell casters knows no bounds; These stupid nerds with silly words and hand waving who stay inside studying instead of training their body and picking up girls. As a testament of your hatred made manifest, when a caster within 30ft casts a spell you can see, as a reaction you can move up to your total speed to move to them and make a melee weapon attack. If you hit them, they roll disadvantage on the concentration check and you gain advantage and resistance to the spells effect.