The first to do this was none other than Jon Finkel, using the Medallion to cast spells in his Ophidian deck at 1998 US Nationals while keeping counter magic available
Bonus Pick: Flareon [3-diamond] (Eevee Grove), Jolteon [3-diamond] (Eevee Grove), Vaporeon [3-diamond] (Eevee Grove), Umbreon [3-diamond] (Eevee Grove), Espeon [3-diamond] (Eevee Grove), Leafeon [3-diamond] (Eevee Grove), Glaceon [3-diamond] (Eevee Grove), Sylveon [3-diamond] (Eevee Grove), Eevee Bag [2-diamond] (Eevee Grove), (Eevee Grove), Eevee [1-diamond] (Eevee Grove), Eevee [1-diamond] (Triumphant Light), Eevee [1-diamond] (Space-Time Smackdown), Eevee [1-diamond] (Mythical Island), Eevee [1-diamond] (Genetic Apex: Mewtwo), Eevee [1-diamond] (Genetic Apex: Charizard), and Eevee [1-diamond] (Genetic Apex: Pikachu)
Before, in formats like Modern, while the removal was good, you could play around it or attack from an angle that was less susceptible to it
Its easy to set up and can sweep anything with ease
Tom shared, "We worked on the frames first