Soul rune

The soul rune is the highest levelled rune in RuneScape. It is used for the strongest curse spells, the teleport-other spells, Enchant Crossbow Bolt (Dragonstone), and Blood Barrage. They can be bought from the Magic Guild in Yanille, Ali Morrisane in Al Kharid (after one has completed the Rogue Trader minigame at least once), Mage Training Arena or Baba Yaga, who lives in the walking house, in Lunar Isle.

Soul runes cannot be crafted using Runecrafting altars, as of yet.