Water Whips

You evoke two watery tendrils on your arms. The watery arms mimic your arm movements and give you 20-feet of additional reach and can use objects normally. 

You can use your action to make two melee spell attacks with your arms. On a hit, the target takes 2d6 force damage. If you hit the same creature twice in the same turn, they must make a Strength saving throw or be knocked Prone.