Firecracker Crystals

As an action, you may throw a crystal up to 30 ft.
and their effects extend in a 10 ft. radius with a
DC 15 Dex. saving throw (1/2 damage on a save).
Red: 2d8 fire damage to all creatures
Orange: 2d8 radiant damage to all creatures
Yellow: 2d8 lightning damage to all creatures
Green: 2d8 poison damage to all creatures
Blue: 2d8 cold damage to all creatures
Violet: 2d8 force damage to all creatures
Black: 2d8 necrotic damage to all creatures
White: 2d8 psychic damage to all creatures