Calamity's Vanities/Infernal Message Book

The Infernal Message Book is a Mount summoning item dropped by Jungle Dragon, Yharon in Revengeance Mode. It summons a rideable perfect lesser Yharon clone that has infinite flight and can move at 79 mph. Defeating Yharon on June 1 will guarantee the item's drop in any difficulty mode.

Trivia

 * The item and its tooltip are references to Yharon's second phase's theme, "Roar of the Jungle Dragon".
 * The buff's tooltip is a reference to how a Yharon mount was one of the most requested features for Calamity's Vanities.
 * The item was added on Calamity's fifth anniversary, June 1.