I have no idea if this is even possible, but it would be awesome if the game recorded everything you killed, and then in a REALLY rare event brought it back to life in skeletal form. These skeletal beasts would amass in an army, and you would have to fight the hoard off, possibly amassing riches(of bones?) whilst doing so. Edit: I have very little doubt this is in the wrong place Sorry in advance to the one who has to move it.