Void Torrent

Call forth a a void stream that’s strikes an 5ft area that you can see within range. All creatures within its initial range must make a dc 15 dexterity saving throw. On a fail take 2d8 damage and get knocked prone for one turn, on success take half as much damage and ignore the status effect. After the initial attack, any creature that comes in contact with the beam must make a dc 15 dexterity saving throw or take 2d6 damage, half as much on a successful save. This damage can only happen once per round. As a bonus action the beam can be moved up too 15 ft