The Trainer Gallery subset of cards is found within the last five sets released in the Sword and Shield Era: Crown Zenith, Silver Tempest, Lost Origin, Astral Radiance, and Brilliant Stars
Everything from what cards you can include due to mana costs to deck construction to play is about mana
The Most Fun I play Marchesa, The Black Rose Modular Affinity in EDH, so what I find fun may not be what you find fun by a long shot
Fluttershy CAN go off, she just WON'T unless she's backed into a corner.)
Yes, it Diabolic Edicts your opponents if they do have creatures, but crappy creature removal is not what you want for a 9 cmc spell
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