Storm's Swordfire

This spell causes any one metal bladed weapon touched by the caster during spellcasting to erupt in flames. These magical flames persist for the spell duration, racing up and down the blade without harming it or affecting its temper. A weapon exhibiting swordfire is considered a +2 magical weapon for purposes of what beings it can hit, but does not gain any attack bonuses or damage bonuses.

The flames inflict an additional 2d4 points of damage atop the physical damage normally done by the weapon to any creature struck. If a creature struck is undead, it suffers an additional 1d12 points of damage on top of the flame damage. The flames also ignite all flammables (such as paper, cloth, and oils), and force item saving throws vs. magical fire on all objects touched by them.

The caster can by act of will alone cause her own swordfire to instantly die, but once it is gone, it cannot be recalled. Another swordfire spell is needed to evoke the effect again.

The material components are a lodestone or magnetized piece of metal and a lump of saltpeter as large as the caster's mouth. The weapon is not consumed by the magic, but the lodestone and the saltpeter are.