I am sure it is an idea that has been done many times before, I am not trying to claim any originality here, just going to talk about my findings and experience a little
The first place I look is my LGS
One black mana and 2 life puts any card on top of your library
Why did the creatures have to be able to change back and forth

The products are: Scene Box - Final Fantasy: Garland at the Chaos Shrine Garland, Royal Kidnapper The Destined Warrior The Destined White Mage Chaos Shrine's Black Crystal The Destined Thief The Destined Black Mage Scene Box - Final Fantasy 8: Children of Fate Edea, Possessed Sorcerer Fated Clash Rinoa, Angel Wing Seifer, Balamb Rival Duelist's Flame Squall, Gunblade Duelist Scene Box - Final Fantasy 9: The Siege of Alexandria Brilliant Wings Judgment of Alexander Mega Flare Amarant Coral Vivi's Persistence Search for Dagger Scene Box - Final Fantasy 15: Camp Comrades Noctis, Heir Apparent Fishing Gear Chocobo Camp Flash Photography Campsite Cuisine Warrior's Resolve Game Edition Commander Deck - Limit Break Commander deck Cloud, Midgar Mercenary promo Download code for Final Fantasy 7 Chocobo Bundle 10 Final Fantasy Play Boosters 32 landmark basic lands (16 foil, 16 non-foil) 10 Chocobo track foil lands 2 of 20 Chocobo track foil borderless cards Paradise Chocobo (reprint of Birds of Paradise) foil promo 1 of 24 non-foil cards from Scene Boxes 1 Chocobo-themed click wheel It's worth noting that there is also a new promo card dedicated to the existing Yuna, Grand Summoner, that will be distributed during future MTG x FF events

Ancient Adamantoise Man, I absolutely love turtles, and they always have the most wild designs, like Fecund Greenshell, Ambling Stormshell, and Blossoming Tortoise