This item is a world drop.
- The Oathkeeper is an Epic Weapon card in the World of Warcraft: Trading Card Game's Drums of War set.
- This item could be a reference to The Oathkeeper keyblade from the game Kingdom Hearts.
- This item may also be a reference to the Valyrian steel blade Oathkeeper in George R.R. Martin's Song of Ice and Fire series of books.