Vex's Impacting Piano

You dramatically point up into the air in a space you can see within 60 feet of you. Immediately afterwards a cartoonish falling sound can be heard within 100 feet of where you pointed. Shortly after a piano materializes out of thin air and crashes down into the ground violently. This creates a 30 ft. tall and 10 feet diameter cylinder. All creatures in this cylinder must make a Dexterity saving throw or take 8d8 bludgeoning damage and fall prone as the piano falls on them. On a success, a creature takes half as much damage and is not knocked prone. The piano is immediately destroyed upon impacting the ground and disappears.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 4.