Bag of Azure Stones

This bag contains 5 blue stones in its pouch. You can use an action to crush a stone in your hand and point in one direction.

Doing so causes a stroke of lightning forming a line 30 feet long and 5 feet wide blasts out from you in a direction you choose. Each creature in the line must make a DC 16 Dexterity saving throw. A creature takes 4d6 lightning damage on a failed save, or half as much damage on a successful one. The lightning ignites flammable objects in the area that aren’t being worn or carried.

Notes: Damage: Lightning