The Darkmoon Blade Covenant summons the player to invade the world of a player who has killed Gwynevere, Princess of Sunlight. It works similarly to the Cat Covenant Ring, except that it teleports the player to Dark Anor Londo instead of Darkroot Garden.
- Upon arriving to the world of the guilty, players may remove this ring and replace it with another.
- If the ring was lost in any way during the game (fed to Frampt, dropped, etc.) it will always reappear inside of the chest behind Kingseeker Frampt at Firelink Shrine. The only other rings in the game to share this characteristic are the Cat Covenant Ring and the Covenant of Artorias.
- This can be exploited by the player, allowing them to feed it to Frampt an infinite number of times for 1,000 souls each. The chest will spawn another ring whenever a loading screen takes place.