How do you open the magic door in RuneScape?

Answer 1

Short Information:

The magic door is part of Dragon Slayer Quest, You need to place certain items in the door to get something in a chest inside. Other than the quest, you don't need to worry about the door.

Long Information:

To get through the Magical Door (Provided you are after a Map-Piece - Dragon Slayer Quest), you'll need an unfired bowl ("bowl that's not seen heat"), whether it be bought or created with the Crafting skill, a Wizard's Mind Bomb ("drink used by a mage"), which can be bought in Falador for 3 coins, a lobster pot or a crayfish cage ("small crustacean cage"), which can be bought in Port Sarim's fishing shop, and a piece of silk ("worm string changed to a sheet"), which can be bought in Al Kharid or in Varrock.

Once you have all these items, go down into the Dwarven Mine.

Inside the mine is a room with a sealed door in the northeast part of the mines, just north of the scorpions. When you've found it, use all the items on the "Magical Door." Be sure to use the Wizard's Mind Bomb with the door, as the left-click action for it is to drink it. They will disappear after usage.

Trying to use the items on the door without consulting the Oracle results in the message "I have no idea what I should put in the opening of this door. Maybe I should just leave it for now."