Cinderbrand (3.5e Equipment)
From D&D Wiki
This +2 rapier adds another 1d8 fire damage when the enemy is denied its Dexterity modifier to AC, and 1 per day/level can cast darkness. 1 per day/level adds d4 fire damage to physical damage, this choice must be made before you make the attack.
This rapier is made of rare black adamant and the guard cup is made out of winding, black metal studded with small rubies, the handle wrapped with red dragon hide.
Cinderbrand was bestowed upon the famous pirate hunter, Beliscon Beninoct, who died some years later, and has traveled across the world. Its exact location is unknown.