Watersprout

You create a spout of seawater that swirls within a 10ft tall and 15ft radius cylinder centered on a point within range. The water fills the area and can optionally take the form of a whirlpool, or another form of the caster's choice. Each creature within the cylinder must pass on a strength saving throw or take 3d8 bludgeoning damage and fall prone. If the save succeeds, the creature takes half damage and doesn't fall prone.

If the caster is within the cylinder at the time of the casting, they may teleport to an unoccupied space within the cylinder that the caster can see.