You have a penchant for overpowering even skilled spellcasters. You gain these benefits:

• When a creature you can see within your reach casts a spell, as a reaction you can make a single melee attack against that creature. On a hit, the attack deals additional damage equal to the circle of the spell they are casting. On a critical hit, the spell is interrupted and isn’t cast, but the spell slot isn’t expended.

• While you are within 5 feet of a creature, you have advantage on saves against their spells and they have disadvantage on saves made to maintain concentration.

• While you are grappling a creature, it can’t cast spells that require a somatic component.