Grim Reapers during the Halloween 2006 season.Ophidian Berserkers during the Ophidian Invasion of summer of 2006.'For your valor in combating the fallen creature, a special artifact has been bestowed upon you.' They are not looted, but instead placed directly in your Backpack (or Bank Box, should you be overweight) with the following system message: These odds improve as you make more and more kills until such time as you receive an item, at which point the counter resets.
The base chance of achieving an artifact is about one in a thousand (or one in a hundred from Dark Fathers). To acquire a standard Doom arti, you must defeat certain monsters within the Doom Gauntlet: There also exists a set of Doom stealables (some of which are in very short supply and hence also very valuable). They all have the Artifact Rarity property with a value of 11, with the exception of the Legacy of the Dread Lord and The Taskmaster (which are only at level 10) this is a fairly abstract figure, as there is no set rate at which the items enter the game world. The Dungeon of Doom is the source of some of the most powerful Artifacts around.
