Pyronomicon

"The secrets of the ancient pyromancers are written within the pages of this book."

- Description

The  is a post-Leviathan magic weapon.

Appearance
The appears as a book bound in magma. Its cover is black and covered in veins of magma. When the book is open, the pages appear to be made out of flames.

Use
Upon holding the left mouse button while holding the, the player will open the book and launch homing fireballs until they release the M1 key. The fireballs will deal massive damage against NPCs that they hit, before exploding into large mushroom cloud-shaped explosions of fire and igniting the surrounding blocks, at the cost of 5 Mana. The fireballs will inflict 575 damage, while the explosions they produce will inflict 555 fire damage. The fireball and explosion inflict Burn V.

Upon right-clicking while holding the, the player unleashes an explosion of flames that expands outwards for 100 blocks, igniting all blocks it touches, at the cost of 10 mana. Any NPCs within the initial 50-block-wide area will receive 875 fire damage, while any NPCs that the shockwave of flames touches will receive 850 fire damage. The firestorm inflicts Burn V. Both spells have a 90% chance to not consume any mana.

Obtaining
The can be crafted at an Ancient Altar with five Inferno Essence.

Ancient Altar
Inferno Essence x5 = 

Trivia

 * The is believed to be the most potentially damaging weapon in the game. With the Mage's Emblem, the Slayer's Emblem, the Ring of Fire, the Pyre Amulet, the Fire Charm, the Pyromancer's Emblem, Pyromancer armor, Power of Armageddon, and a level 5 Burning enchantment, using the Heart of the Tormentor to gain a sixth accessory slot, it is possible to inflict 4186 damage with a single hit from a fireball cast using a  upgraded to Legendary using a Grindstone. Combined with the amount of damage caused by the explosion under these circumstances(4042, rounded down from 4042.4), this would inflict a total of 8228 damage. As the  casts 40 fireballs per second and inflicts Burn V, which deals 15 damage per second and increases fire damage taken by 100%, the player would achieve a DPS of 658,255 under these conditions, making the  the most damaging weapon in the game.
 * According to the item description, the contains the secrets of the "ancient pyromancers". However, the player is only able to obtain the  by crafting, suggesting that this either is not true or that the player is not truly "crafting" the, but rather calling it into existence.
 * The is the strongest fire damage weapon in the game.