Combat Transposition

When you are targeted by an attack, you may choose a creature you can see within range of equal size to you or smaller. If it is willing, you switch places immediately, and the other creature takes the attack if the roll is high enough to hit it. If the target it unwilling, it can make a Charisma saving throw to resist being teleported. On a success, it does not swap places with you, the casting fails, and you remain as the target of the attack.