Hell’s Knight (Su)

At 10th level, a Hellknight can grant a weapon he wields or touches the axiomatic, flaming burst, or unholy weapon special ability. This weapon has this Hellknights Hellknights special ability as long as the Hellknight remains within 100 feet of the weapon, but a Hellknight can maintain only a single weapon’s granted special ability at a time. The Hellknight also becomes immune to fire while wearing Hellknight plate.