Gnome With the Wand of Death
Intelligent monsters can make use of attack wands; this includes both very weak monsters, and very powerful wands. In the extreme case, Random Number God will dispatch a gnome that came across a wand of death – a proverbial unfair way to die. In the webcomic Dudley's dungeon, this gnome is formally named the Gnome With The Wand Of Death, or GWTWOD.
Note, that all hostile monsters use wands against you, even if the monster cannot damage you otherwise, like a succubus, nymph or nurse. Nymphs are particulary dangerous, because they may steal a wand from you and then zap it at you, especially on no teleport levels.
The idea of a gnome with a wand of death has been about for some considerable time; the first use of the meme in rgrn appears to have been by Torsten Edelmann in 1996, and it is described as proverbial by 2002.