Dragon Quest

Walkthrough
Enter the Crafting Guild and talk to any of the three master crafters walking around. Select the option to ask if they have any quests for you. The master will tell you about an ancient text that another adventurer had found and brought to the Guild. He will instruct you to take it to Zarvistic Rarve, master of the Yanille Magic Guild.

Go to the Magic guild and talk to Zarvistic Rave. Show him the text, and he will decode it.

Apparently, the ancient text contains instructions on how to make Dragon Equipment.

Apparently, the following materials are needed: a piece of rune equipment, a cut dragonstone, a dragonic visage, and orichalum ore, and some sort of "lunar magic." Your character will then explain about the lunar altar. If you aren't aren't already using the Lunar Spellbook, return to Lunar Isle and switch spellbooks. If you talk to him while having it, you will automatically unlock the Level 100 spell "Enchant Dragon."

Now, return to the Crafting Guild and inform the master of this information. None of them will know what orichalum is, and as such they will recommend that you talk to the master smith Oziach.

Go to Edgeville and talk to Oziach. He will tell you that Orichalum is a magical ore even stronger than runite; however, it has only been found on Crandor Isle, but has been magically sealed away to prevent foolish adventurers from going there and dying to Elvarg. Remind him that you slayed Elvarg, and he will give you the tome of orichalum. It has a locate command to allow you to find the entrance.

Note that the tome of orichalum cannot be dropped, destroyed, or traded. However, if put in a bank, it will not take up a bank space.

Now, go to Crandor and head to near where you fought Elvarg, making sure to bring a pickaxe and several Dwarven Stouts or a Mining skillcape, and the equipment for a fierce battle. Remember, you do not need the Lunar Spellbook for this part, so switch spellbooks if necessary. Use the "locate" command to find a glowing wall. Use the tome of orichalum, and a portal will appear in front of the wall.

You will appear in a room with 5 black demons and one orichalum rock. The orichalum rock takes about two minutes to mine, and takes anywhere from 50 minute to an hour to respawn.

If anybody else is here or the rock's ore is depleted, it is recommended that you switch worlds, or your job will likely be impossible.

Rewards
Access to Level 100 Lunar Spell "Enchant Dragon."