Burning Heels

Choose a creature that you can see within range. The ground beneath the creature's feet turns into a trail of fire that follows the creature. The creature must move its full movement speed during its turns and cannot move through a space which it already moved through this turn. If the creature cannot or chooses not to use its movement in this way during a turn, it takes 2d8 fire damage at the end of its turn. If the flame is unable to follow the target for at least one full round, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.