Prodigious Caster

Your solid understanding of magic principles and keen reflexes gives you the edge in combat, granting you the following benefits:

• Increase your Intelligence or Dexterity score by 1, to a maximum of 20.
• If you can see a creature cast a spell of any level, you can discern the nature of it as a Reaction. Also, if you have a spell slot equal to the level of the spell, you can cast it within the next minute without spending any spell slots once. You cannot use this benefit again until you finish a long rest.