Which imp did you ask? The imp council member, because you have gathered him already? If so, he's not the correct guy.
http://www.kiya1.de/images/Div_Councilhall.jpg.htmlLook at the map Dragon made => NW room, the imp historian.
Kiya
Sir_Toejam liked this divine spell very much:
5. divine death - while most folks frown on the divine spells, this will take out any creature in the game, excepting the black ring bosses, even at level 1 (kill a 7500 hp dragon rider with one shot!), especially when combined with my absolute favorite and most utilitarian spell: