Quick Mind

You have spent a large portion of time studying the theories of casting spells. As long as you can see or hear the caster you can quickly identify a spell being cast and at what spell level. You gain the following benefits.

• Increase your Intelligence score by 1, to a maximum of 20.
• You may attempt to identify a spell being cast without using your reaction.
• You gain advantage on Arcane checks used to identifying spells being cast, regardless of which class list the spell belongs to.
• If you succeed on identifying the spell being cast, you also know at which level it is being cast at.

(Rules for identifying a spell can be found in Xanathar's Guide to Everything (pg 85))