Water Whip

You create a long tentacle-like whip of water within range that lasts for the duration or until you cast this spell again. When you cast the spell, you can make a melee spell attack against a creature within 15 feet of the whip. On a hit, the target takes force damage equal to 1d12 + your spellcasting ability modifier. On a hit, the target must succeed on a STR Saving throw against your spell save DC or be moved 10 feet towards the whip. 

As a bonus action on your turn, you can repeat the attack against a creature within 15 feet of the whip, the same STR Save is required on hits. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d12 for every two slot levels above 2nd.