Merlin's Crystal

Camelot Castle
Talk to King Arthur to start the quest. Then talk to Sir Gawain and ask him how Merlin became trapped. Then ask him how to get into Keep LeFaye. Speak with Sir Lancelot to learn more about Keep LeFaye. Speak with Sir Lancelot again until he explains that Keep LeFaye receives deliveries by boat.



Keep LeFaye
Go to the dock of Catherby and ask Arhein about his deliveries. Get another player to talk to Arhein. While he's distracted, board his ship to stow away on it.

Upon arrival, head up two flights of stairs to the top floor and kill Sir Mordred. When Morgan LeFaye appears, spare his life to discover how to break the spell. Go back down one flight of stairs and escape via the emergency escape ladder to the west. Once outside, kill a level-32 bat immediately to the west and pick up the bat bones which it drops, as you will need these later.

Black candle
Pick up the insect repellent from the house north of Catherby bank, and grab your bucket. Head to the beehives west of Catherby, and use the insect repellent on one, followed by the bucket to get wax. Take the wax to the Candle Maker in the house west of Catherby bank and ask about black candles. Speak to him again with the bucket of wax and he will hand you a black candle.

Excalibur
Head to the lake south of Taverley and talk to the Lady on the peninsula about Excalibur. Walk into Grum's Gold Exchange in Port Sarim. A beggar will spawn when you try to open the door. Give the beggar the bread, and he will transform into the Lady, who then gives you Excalibur.



Magic words
Go to the Chaos Temple in level-11 Wilderness, north of Varrock. Search the altar to find the magic words: "Snarthon Candtrick Termanto."

Vanquish the demon
Go back to Camelot, and head northeast around the castle until you find a pentagram. Light your black candle with a tinderbox, drop the bat bones on the pentagram, and use the magic words (Snarthon Candtrick Termanto) to vanquish the demon.


 * See Glitches for info about an NPC duplication bug regarding the demon.

Freeing Merlin
Head up the castle's southeast tower and use Excalibur on the crystal to free Merlin. Then speak to King Arthur to complete the quest.

Rewards

 * 6 Quest Points
 * Excalibur
 * Ability to start Hero's Quest