Antivan Fire

As an action, you can throw an Antivan Fire at a point up to 60 feet away. Each creature within 10 feet of an exploding Antivan Fire must make a DC 15 Dexterity saving throw, taking 3d6 fire damage on a failed save, or half as much damage on a successful one. A creature that takes damage from an Antivan Fire takes 1d6 fire damage at the start of each of its turns for 4 rounds. 

Notes: Damage: Fire, Damage: Fire