Seven Cities of the Golden Land

During your Main Phase: You can Fusion Summon 1 Fusion Monster from your Extra Deck, using Zombie monsters from your hand or field as Fusion Material. If a Zombie monster(s) is Special Summoned by a card effect (except during the Damage Step): You can target 1 Set card in the Spell & Trap Zone; it cannot be activated this turn. You can only use each effect of "Seven Realms of the Golden Land" once per turn.