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Inaccurate?

Hellfire Storm

(Book of Vile Darkness)

Evocation [Evil]
Level: Diabolic 7,
Components:
Range: Medium (100 ft. + 10 ft./level)
Area: 20-ft.-radius spread

As hellfire, except in area and range and that the spell deals 5d6 points of special diabolic fire damage.

Also appears in

  1. Fiendish Codex II: Tyrants of the Nine Hells