La carte The Monarch, de l'édition Conspiracy: Take the Crown, est inspirée de la mécanique "the edge" du jeu de cartes à collectionner "Vampire: The Eternal Struggle" aussi créé par Richard Garfield.
Cette mécanique était initialement prévue pour l'édition Ixalan.

Source ("It was a singular object that only one player at a time could control, but having control of it gave you additional power. [...] He wanted permission to explore an edge-like mechanic (what would eventually become the monarch mechanic)")