The Graveyard Mist is a conjuration effect from the Witchery mod. When performed, it will cause a large mist to spawn, covering about 16 blocks in every direction from the Brazier. Note that this mist cannot be seen in Minimal Particle settings. It can be performed by using a Gunpowder, Quicklime, and Glowstone Dust on a Brazier, then lighting it with a Flint and Steel. The Brazier must have Altar power, which means it must be within 15 blocks of the Altar.