Library of Leng

A magical room, capable of being built only by those well-versed in the art of both architecture and enchantment. Meant for intense magical study, the walls of the library are intertwined with an invisible, magical netting. This netting captures all of the excess energy dispersed during magical rituals and experimentation, and feeds it back into the library. Because of this, any spellcaster which expends a spell slot while within the library automatically regains a spell slot of one level lower, if possible. In addition, any intelligent creature within the walls of the library can attempt to draw on this excess power, even without full knowledge of the arcane process involved. Any intelligent creature within the library may use their action to attempt an Intelligence check to cast any Sorcerer spell of 6th level or lower; the DC for this check is equal to 12 + the level of the spell being cast. In order to function, the library requires a spellcaster to expend a spell slot of 6th level or higher every 24 hours, otherwise the library’s abilities cease to function until such an expenditure has occurred. For many arcane spellcasters, a Library of Leng is as close to a holy place as they will ever find in their lives.