This tome with covers of white marble bound in pale blue leather has a large padlock on its side, preventing the book from being opened, and resists all attempts to open it with magic. If the correct key is inserted, you can use an action to turn the key, speak the command word and summon Gazre-Azam, as if you had cast the conjure elemental spell. The book can't be used this way again until the next dawn.

Notes: Summoning