Black Rift
From Age of Sigmar - Lexicanum
The Black Rift is a creation of the Furnace Kings, forged from warpfire and shaped by impossible tools. It had obsidian plates that whiled and danced above the flower without any pattern, as it was a thing of chaos.[1]
Pazak could use it to open a door to Khorne's Domain with a constant flow of blood and the power of the Sulphur Citadel.[1]
