The Witcheries

When a creature attunes to the Grimm Grimoire, they gain access to the Witcheries, a vast reservoir of knowledge and spells from many covens, lineages, and disciplines of witches. While you are attuned to the Grimm Grimoire, you gain access to the Bard, Druid, and Cleric spell lists and can learn/prepare spells from those lists as normal, regardless of your spellcasting class.

Note: The Witcheries is a companion feature to the magical artifact The Grimm Grimoire. This feature mechanically grants access to the effects of the Grimm Grimoire.