Composed Mind

You are good at maintaining your spell concentration in the heat of battle.

• You have advantage on Constitution saving throws that you make to maintain your concentration on a spell when you take damage.
• If you are hit by an attack while concentrating on a spell, you can use your reaction to cast Shield without expending a spell slot. You can use this feature once and then you must finish a long rest before you can use it again. (This feature does not enable you to cast Shield using a spell slot that you have unless you also know that spell from another source.)