Weapon of Light

You channel your inner spirit into light to summon an incorporeal holy weapon that takes the appearance of your choice 30 feet above a spot within 15 feet of you. It then slams into the ground, creating an explosion of light rays that affect both enemies and allied creatures in a radius of 15 feet of the initial impact.

All creatures you consider enemies in the range must do a Dexterity saving throw, receiving 2d6 points of radiant damage if fails or half if it succeeds. All creatures you consider allies heals the same ammount as health.

The hammer remains there for two more rounds, exploding rays of light every start of your turn, doing the same effect.