Elemental Shield

You create a shield of Fire air rock or ice in front of you. If you chose fire or ice when someone  misses you with the attack you can use your reaction to do a d6 damage of the element you chose to that Creature And you can use your action to make a melee attack roll doing the same d6 damage if it hits. If you choose lock your movement speed is reduced by five but the shield increases your AC by 3 and If you are forced to remove you can reduce the distance that you are moved by 10 feet. If you chose air  you can gain a flying speed  equal to your walking speed.