Energy shift

When you are attacked with a weapon or spell and it hits. You can use your reaction to channel some of the energy into yourself and to bolster yourself. The attack deals 1d6 less damaged to you and the amount can be used in 4 different ways. You can add the number rolled to your AC which last until the end of your next turn or you can add the number rolled to your next attack damage role, or send the total rolled to a friendly creature within 15 feet to recover hit points or you channel the energy so you can move 15 feet straight away after the hit and not provoke an opportunity attack. 

Spell Upgrade. The die changes when you reach levels 5 (d8), 11 (d10), and 17 (2d8).