A double-headed axe the size of a passenger jet, with a living oak tree for a handle and a head of still-molten metal.
Grull arrives holding it and tests it before using it: swung up over his head with the top of the weapon clearing the chamber roof by inches, swung down into nothing, then a few more times as though checking the weight and heft — and it is the size of a goddamned passenger jet in his meaty hands. The handle looks to be a living oak tree; the metal head moves as if it is still molten, and it trails smoke.
What it does is not subtle. A cleave into the ground buckles and tears up the earth like a meteor strike, throws Carl off his feet from a distance, and hits with a shockwave that feels like being struck by a train. A single blow splits the Station Mimic in half, leaving a cleaved mountain of flesh. Between attacks he simply drags it along the ground.
A double-headed axe the size of a passenger jet, handle a living oak tree, head of shifting molten metal, trailing smoke.
The god's weapon, and the source of the earthquakes flattening the trainyard.