Arcanum Mythallium

This book contains copied and translated texts from the Nether Scrolls of an ancient Arcane cannon, constructed by the mages of the flying cities of Netheril, called The God Killer. A weapon it alleges was capable of wounding or even killing a deity but it used so much of [tooltip:the Weave it created a dead zone of magic miles in diameter. There is a sketch of a Black Obelisk that was used to channel the Weave into the device.

It does not mention an author nor does it list any particular sources. It appears to be a copy of another copy and is missing many parts of the required incantations and schematics. It does mention that the Netherese city of Xyntalhus had the only completed God Killer but this city was lost to history as it crashed into a distant continent.