Wizard Cromperty, located in north-east Ardougne, can teleport you to Rune essence and is involved with the Tribal Totem, One Small Favour and King's Ransom quests. He has a slight problem with the Postal service.
After completion of the Ardougne medium achievement diary he will give you 100 pure essence for free every day, 150 upon completion of the hard tasks, and 250 upon completion of the elite tasks.
- Wizard Cromperty is the solution to the master cryptic clue: A chisel and hammer reside in his home, strange for one of magic. Impress him with your magical equipment. Wear equipment adding up to at least 100 magic attack bonus when talking to him.