This sword of dubious value appears to be a longsword of excellent quality. Its hilt is engraved with pictures of some kind of small bird, canaries, and has a pommel stone made of aqua marine. The blade itself is standard length for a longsword though there appears to be some dirt or perhaps soot smudges on the blade when first found.
Abilities: +1 to hit and damage, and detects methane, a highly flammable gas found in mines, the occasional dungeon, or an outhouse. Upon detecting the presence of methane within 5′ the sword will flame up a bright blue flame. This usually ignites the methane causing pain and suffering for all around! Use 1d6 to 3d6 for damage.