Spellbreaking Armor

Armor (plate), legendary (requires attunement)

Each plate in this suit of armor has an eldritch rune etched on it, which is filled with silver. While wearing this armor, you have advantage on saving throws against spells and other magical effects, and spell attacks have disadvantage against you.

When you see a creature within 60 feet of you casting a spell, you can use your reaction to interrupt the casting. If the creature is casting a spell of 7th level or lower, its spell fails and has no effect. Once used, this property of the armor can’t be used again until the next dawn.