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Artifact Creature Synth0/0 Improvise (Your artifacts can help cast this spell

Additionally, Thrumming Stones legality is rather problematic for the cards potential to see competitive play

[2] Grading services at conventions can grade trading cards, like Pokmon, Magic: The Gathering, or Yu-Gi-Oh!, as well as sports memorabilia, like baseball or football cards

Combined with a lack of removal for such cards beyond Harpies Feather Duster in the current format, this deck is more sustainable and oppressive than one may expect

None of this is to say why this mechanic is so good which is a pretty simple one

Currently, an ultra rare Arceus V card is marketed at a little over $7