A creature with a counter on it is considered modified no matter what kind of counter it is or which player put it on that creature
The Amber/Amethyst deck is much more quest-forwardit includes a mechanic called Evasive, which means that cards can only be challenged if the challenging character also has Evasive
The decks are fully sold out on Card Kingdom
Adventurer's Inn Balamb Garden, SeeD Academy Baron, Airship Kingdom Capital City Clive's Hideaway Crossroads Village Eden, Seat of the Sanctum Gohn, Town of Ruin Gongaga, Reactor Town Guadosalam, Farplane Gateway Insomnia, Crown City Ishgard, the Holy See Jidoor, Aristocratic Capital Lindblum, Industrial Regency Midgar, City of Mako Rabanastre, Royal City Sharlayan, Nation of Scholars Starting Town The Gold Saucer Treno, Dark City Vector, Imperial Capital Windurst, Federation Center Zanarkand, Ancient Metropolis
Elsa and Wreck-It Ralph serve as the mascot characters for the Amethyst/Ruby deck, and Scar and Kronk grace the Emerald/Steel option
Cruella De Vil, Miserable As Usual When she stops by, misery is company