Steel Resolve

You’ve learned to anchor your mind and body in battle, ensuring your spells endure when needed. You gain the following benefits:

Ability Score Increase. Increase your Constitution score by 1, to a maximum of 20.

Focused Mind. When you make a Constitution saving throw to maintain concentration on a spell, you can add your spellcasting ability modifier to the roll. You can use this benefit a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a Long Rest.

Resilient Focus. While you are concentrating on a spell, your Armor Class increases by 1.