Alastor's Spire of Flames

Five pillars of flame erupt from the ground engulfing enemies in flames.

Choose up to five creatures in a 20 ft by 20 ft radius cylinder centered on you, they make a dexterity saving throw. A target takes 8d8 fire damage and be set on fire. A creature takes 2d8 fire damage on each successive turn if on fire, the creature can take an action to extinguish the fire. on a successful save they take half damage and are not set ablaze.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the amount of creatures you can target increase by one for each slot level above 4th. Additional when you cast this spell on 6th level or higher the range increases to a 40 ft radius cylinder.