Errol's Internal Blades

Choose a creature within range that you can see. That creature must make a Constitution saving throw. On a failure, portions of the creatures internal organs crystalize becoming hard and sharp and cause internal damage when the creature moves. Until the spell ends, the creature takes 1d6 slashing damage for every 5 feet the creature moves on its turn and this damage cannot be reduced. The creature may then repeat the saving throw at the end of it's turn. On a success nothing happens.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, the damage increases by 1d6 for each slot level above 6th.