Prayerbook bound in supple skin. Incantations of the god-slaying black flame are written within. Can be given to a learned cleric to gain access to the following incantations: - Black Flame - Black Flame Blade

Stormveil CastleDungeon. Nearest Site of Grace: Rampart TowerGrace. From the Rampart TowerGrace site of grace, go out the door to the outside (where the birds are). Take a running jump onto the roof across from the door. On the left side of the roof, there will be two separate areas you can drop down to. Drop down to the one without stairs on it, and drop down again. You'll land by a set of steps going down. Go down the steps to find some rats and a white fog wall. You'll need a Stonesword Key to pass through the fog wall, and inside will be two chests. One contains the Godskin Prayerbook, the other contains the Godslayer's Seal. Alternatively, from the Liftside ChamberGrace Site of Grace, exit from the door to the courtyard and turn right. Hug the right side wall past all the enemies. You'll find the set of stairs going down on the wall on the other side.