Faerun - Northern Sword Coast - DnD

As a bonus action, you spread a bag of caltrops covering a square area that is 5 feet on a side. Any creature that enters the area must succeed on a DC 15 DEX saving throw or stop moving this turn and take 1d4 piercing damage. Taking this damage reduces the creature's walking speed by 15ft until the creature regains at least 1 hit point. A creature moving through the area at ¼ speed doesn't need to make the save. You can throw a handful on your enemies, instead of an attack roll, DEX save DC 15