Moonbeam

Range: 120 feet
Material Several seeds of any moonseed plant and a piece of opalescent feldspar
Duration: Concertation Up to 1 minute
5 foot radius, can be moved 60 feet using an action. When a creature enters the spell’s area for the first time on a turn or starts its turn there, it must make a Constitution saving throw. It takes 2d10 radiant damage on a failed save, or half as much damage on a successful one. More details in PHB.