Guardian

Your worry and compassion for others has emboldened you to suffer any pain in their stead. You gain the following benefit:

Guardian Angel: When a creature within 15ft of you is targeted by an attack or spell, you can use your reaction to move in front of that creature and make yourself the new target of that attack or spell.

If the effect is an AOE and both you and the targeted creature are caught in it, you can use your reaction to move to them and take the damage that creature would take instead, gaining resistance to the second instance of damage and damage of the same type until the start of your next turn.

You can use this reaction a number of times equal to your Constitution modifier, and you regain all expended uses when you finish a long rest.