You are a highly trained magic user, knowing all the outcome of magics, You gain the following benefits:

• Increase your Intelligence score by 1, to a maximum of 20,
• You gain expertise in arcana,
• You may use your reaction to roll an arcana check against the spellcaster spell DC+1 per spell level, on a spell you can see withing 120ft, on a success you're able to tell what spell was cast.