Swarm of Bones

As an action the caster can start summoning bones from around them and firing them at the enemy the target creature must do a dexterity saving throw on a failure they take 1d6 necrotic damage on a success they take half that damage. On the next turn the caster can choose to continue firing the spell at the cost of their bonus and main action, the target must make a new dexterity saving throw on a failure they take 1d12 necrotic damage on a success half the damage.