Dune Hydra

You conjure a swirling maelstrom of sand and form it into five ribbons, which constantly shift and move in the air around you for the duration. When you conjure these ribbons and as an action on subsequent turns, you can use them to slash at nearby enemies. Each ribbon targets a creature within 15 feet of you, and they can each target different creatures or the same one. Make a melee spell attack against each creature you targeted. On a hit, the target takes 1d10 Slashing damage for each ribbon that targeted it.

Using a Higher-Level Spell Slot. You conjure one additional ribbon for each spell slot level above 3.