Initiation Time: 1 action
Range: Self (20-foot radius)
Duration: Instantaneous
A vertical burst of flame roars out from you. Each other creature in a 20-foot radius cube centered on you must make a Dexterity saving throw. A creature takes 8d8 fire damage on a failed save, or half as much damage on a successful one.
At Higher Levels. When you initiate this form at a higher level, the damage increases by 1d8 for every level above 4th.