Qu'aph

Qu'aph is the Nehekharan God of Subtlety and Snakes, particularly Cobras, for it was the form of a Khemrian Cobra that he took within the Great Land, prior to the coming of Man. Indeed, the god would lie in ambush beneath the surface of the desert before lunging towards his prey and sinking his spear-sized fangs into the scaly throats of lesser snakes.

Source
1: Warhammer Fantasy RPG 2nd ED -- Lure of the Liche Lord 2 Warhammer Armies: Tomb Kings (8th Edition)
 * 1a: pg. 65
 * 2a: pg. 44