aqua elemental waltz

You create up to 4 magic bubbles within range that are each 5ft in diameter. each bubble appears in a unoccupied space you can see.
On your turn you can spend a bonus action to move the all the bubbles into a direction of your choosing, the bubbles must all move in the same direction. If one of the bubbles hits a creature, object or surface they pop sending a shock-wave of thunder energy from a 10ft range centered on the bubble. if a creature or object gets hit they need to make a constitution save or take 4d10 force damage and half of that on a successful save.

at higher levels the spells damage increases by 1d10 for every level above third