Les cartes Urza, Powerstone Prodigy, Urza, Prince of Kroog et Urza, Lord Protector, complétées par Urza, Planeswalker, forment un cycle vertical (cartes d'une même couleur mais avec une rareté différente) de l'édition The Brothers' War.

Source (It was decided that Urza and Mishra would have a vertical cycle with an uncommon representing them in their youth, a rare representing them in adulthood, and a melded card that represented their state at the end of the war.)