Book of Leviathan

Book of Lucifer is a brand new Active Collectible in Genesis+, it belongs to the Library Pool and can only be found there.

Effects
When activated it summons a friendly Leviathan that fights for you for the duration of the room. It can't respawn and there is a 6 charge on the item.

Unlocked by
Book of Leviathan - Defeat Mom's Heart/It Lives on Hard Mode with Lucifer

Trivia

 * The item is based on the real life Book of Leviathan.
 * The Book of Leviathan is the first book that gives you a unique familiar that you can't find anywhere else.
 * The idea came from BroskiPlays