Shield of Spears

When a creature under the effect of your shield of faith spell is hit by a melee attack you can use your reaction to have the shield of faith erupt into a volley of magical spears. Effectively ending the shield of faith spell and causing the attacker to both miss the attack and force it to make a dexterity saving throw against your wisdom save DC. The target takes 6D6 piercing damage on a failed save and half as much on a succesfull one.