as an action, you begin charging a powerful laser until the next round, once the charging timer is up, you fire a 40 feet-wide laser that travels indefinitely until it hits a solid surface, any creatures within this laser must make a dc (10+your spell casting modifier) dex save, if they fail, they take 1d10+5 fire damage and are knocked prone, if they succeed, they take half damage and are not knocked prone. during the charging of the laser, you cannot move or take any actions, the charging is interrupted if an attack critically hits you or if you are incapacitated.