In summary here, this is certainly a more complicated deck to run than the Ruby and Amethyst deck, but it is - in my opinion - way more powerful
Adventure Lands Ishgard, the Holy See Jidoor, Aristocratic Capital Lindblum, Industrial Regency Zanarkand, Ancient Metropolis Midgar, City of Mako The adventure lands from Final Fantasy provide utility in specific decks, with the upside of a land drop after the adventure
While the selection of non-Black cards might be somewhat limited, there are five such cards in the set that I think deserve to be played at a higher rate in Commander
So, what are some reasons to play 15 or fewer lands
62/62 Mysterious Fossil (Fssil Misterioso) 1st Ed PSA 9 Currently Highest Grade 62/62 Mysterious Fossil (Fssil Misterioso) Unlimited PSA 9 Currently Highest Grade Spanish Set List View Spanish entry here # Spanish My Grade Comments 1/62 Aerodactyl Holo 1st Ed n/a Seeking PSA 9 1/62 Aerodactyl Holo Unlimited n/a Seeking PSA 7 16/62 Aerodactyl 1st Ed Raw Poor condition, Seeking PSA 9 16/62 Aerodactyl Unlimited n/a Seeking Any Raw Condition
