The Flame of Frenzy

You channel the power of the yellow flame of frenzy, screaming and unleashing it. When you cast this spell, you gain one level of frenzied madness. Each creature in a 30-foot cone must make a Wisdom saving throw or take 4d6 fire damage. A humanoid that fails the save gains two levels of frenzied madness.
At Higher Levels.
When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for each slot level above 2nd. When you cast this spell using a spellslot of 5th level or higher, the amount of frenzied madness levels a creature gains when it fails the save increases by one.