You create a floating sheet of curved, reflective ice within range that lasts for the duration or until you cast this spell again. When a creature you can see makes a ranged attack with a piece of ammunition or other physical missile that passes through a space within 10 feet of the mirror, you can use your reaction to move the mirror to intercept the missile. Make a ranged spell attack. If the result of your attack roll is higher than the missile’s attack roll, the missile is redirected back at the attacking creature, using your ranged attack roll to determine whether it hits or misses.   As a bonus action on your turn, you can move the mirror up to 20 feet.