Release the Kraken!

1-level Conjuration

Giant tentacles erupt from you and batter all creatures within 10 feet of you. Each creature in that area must make a Strength saving throw. On a failed save, a target takes 2d6 bludgeoning damage and can't take reactions until its next turn. On a successful save, the creature takes half damage, but suffers no other effect.
 
At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.