Unendurable Frenzy

You scream, unleashing the flame of frenzy from your eyes and spreading it in a 60-foot cone. Each creature in the cone must make a Wisdom saving throw or take 6d6 fire damage. A humanoid that fails the save gains two levels of frenzied madness (exhaustion).
On subsequent turns until the spell ends, you can use your action to continue unleashing the flame of frenzy in the same area. When you cast this spell and each time you use this action there after, you must make a Wisdom saving throw against your own spell save DC or gain one level of frenzied madness (exhaustion). If you move or take another action, the spell ends.
At Higher Levels.
When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d6 for each slot level above 5th.