Crystalline Lance

You conjure a crystal lance and throw it at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 2d6 points of slashing damage.
Whether you hit or miss your target, the lance immediately shatters into small crystalline shards, covering the ground within 5 feet of your target. Any creature that moves through this area suffers 1d6 points of slashing damage per every 5 feet of movement.

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.