Rune longsword

The rune longsword is a longsword stronger than the adamant longsword. It can only be used in combat. It is also the strongest longsword available to free players. Players can make a rune longsword with the smithing skill at level 91 using two rune bars, giving the player 150 smithing experience. When you cast the spell High Alchemy on this item you will get 19k coins. It can be bought from Scavvo in the Champions' Guild or the weapon shop in Keldagrim.

When the magic sword Silverlight or Darklight is used on a Lesser Demon, Greater Demon, Black Demon, or Abyssal Demon, it has the stats of a rune longsword, making it popular for free to play and low leveled pay to play demon slayers alike.

Rune longswords can also be obtained as rewards from Level 3 Treasure trails.