Burning Trap

You brandish the hunting trap or bag of caltrops used in the spell's casting and set it on the ground within 5 feet of you. The next creature that triggers the trap or walks on the caltrops suffers their normal effects, and takes 1d4 fire damage on the start of each of their turns. The spell ends after one minute of fire damage, or when the creature is freed from your hunting trap or healed from the caltrop wounds.

This spell's fire damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).