The Equalizer

Creates a 5 ft. by 40 ft. rectangle that instantly alights, dealing 4d8 fire damage. Casting at a higher level increases damage by 2d8 and area covered by 5ft/10ft. All terrain covered by the spell is considered Rough until the spell ends. Creatures take damage being in the area when the spell is cast, on entering the area, and at the start of a turn in the area. Another 5 ft. around the rectangle in every direction is not rough terrain, but creatures take 2d8 damage from proximity to the intense heat. Can be dispelled early by Dispel Magic. Can be doused using water spells (area affected up to DM discretion for spell used).