Fogwarden

As the mists settled, you have learned to use them to defend others.

When a creature you can see within 30 feet of you is hit by an attack roll, you can use your reaction to swap places with that creature, and you are hit by the attack instead. You can then reduce the damage of this attack by an amount equal to your proficiency bonus. This ability can be used once, regaining use on a short or long rest.