Carthus Pyromancy Tome

The  is a key item in Dark Souls III.

Availability

 * The Carthus Pyromancy Tome is located in theCatacombs of Carthus. From the Abyss Watchers bonfire, cross the bridge, rolling to the left halfway across. You will land on a platform, directly in front of you will be a corpse holding the tome.

Usage
Giving the Carthus Pyromancy Tome to Cornyx of the Great Swamp will unlock the following Pyromancies:
 * Acide Surge (Dark Souls III)
 * Carthus Beacon
 * Carthus Flame Arc