Combustion atoms

A thin sheet of flames shoots forth from you. Each creature in a 15-foot Cone makes a Dexterity saving throw, taking 3d6 Fire damage on a failed save or half as much damage on a successful one.

Flammable objects in the Cone that aren’t being worn or carried start [cannot explode the same species as you] exploding [cannot combustion something that can already combustion like gasoline or TNT barrels and dynamite].

Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 2.

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