Mordenkainen's JoiningYou join two blocks of stone as though they had been cut and dragged that way from the mountain. With your help, the wall should have no gaps whatsoever.
Component Cost: 50 gp
Market Price: 360 gp
Key Skill: Arcana (no check)Level: 6
Time: 10 minutes
Two nonliving objects join together permanently. The boundary between them becomes as smooth and unnoticeable as possible—for objects that could fit together naturally, such as two blocks of stone, two planks of wood, or two pieces of a weapon, the ritual makes them completely seamless.
Published in Dragon Magazine 366, page(s) 30.