# Astromancy Archive *Wondrous item, spellcasting focus, rare (requires attunement by a wizard)* - **Weight**: 3.0 lbs. This brass disc of articulated, concentric rings unfolds into an armillary sphere. As a bonus action, you can unfold it into the sphere or back into a disc. When found, it contains the following spells, which are wizard spells for you while you are attuned to it: [augury](/Rules/Source/spells/augury-xphb.md), [divination](/Rules/Source/spells/divination-xphb.md), [find the path](/Rules/Source/spells/find-the-path-xphb.md), [foresight](/Rules/Source/spells/foresight-xphb.md), [locate creature](/Rules/Source/spells/locate-creature-xphb.md), and [locate object](/Rules/Source/spells/locate-object-xphb.md). It functions as a spellbook for you, with spells encoded on the rings. While you are holding the archive, you can use it as a spellcasting focus for your wizard spells. The archive has 3 charges, and it regains `dice:1d3|noform|noparens|avg` (`1d3`) expended charges daily at dawn. You can use the charges in the following ways while holding it: - If you spend 1 minute studying the archive, you can expend 1 charge to replace one of your prepared wizard spells with a different spell in the archive. The new spell must be of the divination school. - When a creature you can see within 30 feet of you makes an attack roll, an ability check, or a saving throw, you can use your reaction to expend 1 charge and force the creature to roll a `dice:d4|noform|noparens|avg` (`d4`) and apply the number rolled as a bonus or penalty (your choice) to the original roll. You can do this after you see the roll but before its effects are applied. *Source: Tasha's Cauldron of Everything p. 120*