Keystone of Creation

D&D 2024 item: Keystone of Creation. Source: Adventures in the Forgotten Realms: A Verdant Tomb. type Wondrous Item, Artifact rarity, Requires attunement A keystone of creation is a piece of the Stone of Creation, usually between 6 to 10 inches on a side, and can be rough-hewn or cleanly cut and polished by a mason attuned to the Stone of Creation. Random Properties A keystone of creation has the following random properties: 1 Artifact Properties; Minor Beneficial Properties property 1 Beneficial Manifestations manifestation 1 Detrimental Manifestations manifestation Extradimensional Places You can use the keystone to conjure an extradimensional space such as Mordenkainen's magnificent mansion. The easiest way is to simply cast the spell using the artifact's power, which requires no spell slots or material components. Each time you cast a spell with the artifact, the subsequent casting replaces the prior one. For more detailed control of a conjured demiplane or extradimensional space, see "Construction Details." Raising Structures You can use the keystone to conjure a physical structure on the Material Plane. The easiest way is to simply cast the mighty fortress spell using the artifact's power, which requires no spell slots or material components. Each time you cast a spell with the artifact, the subsequent casting replaces the prior one. For more detailed control of a conjured demiplane or extradimensional space, see "Construction Details." Locations conjured by keystones cannot become permanent through repeated spell castings. Connected Spaces You can use multiple keystones to create larger spaces, whether adjacent to each other or even interlinked. You can even combine structures on the Material Plane and extradimensional spaces this way. If you are attuned to one keystone when you attune to a second keystone, the keystones combine to become a single artifact (utilizing a single attunement slot), combining their features and their fates forevermore. You canno...