Mage Slayer

D&D 2024 feat: Mage Slayer. Source: Player's Handbook (2014). category Feat You have practiced techniques useful in melee combat against spellcasters, gaining the following benefits: When a creature within 5 feet of you casts a spell, you can use your reaction to make a melee weapon attack against that creature. When you damage a creature that is concentration on a spell, that creature has disadvantage on the saving throw it makes to maintain its concentration. You have advantage on saving throws against spells cast by creatures within 5 feet of you.