You have practiced techniques useful in 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 concentrating on a spell, that creature has disadvantage on the saving throw it makes to maintain its concentration.
When you fail a saving throw against a spell or magical effect you may use your reaction to reroll the saving throw. You must use the new roll.
You can cast Detect Magic as a ritual at will without using a spell slot or material components.
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