pokemon 23kt gold card 23K Gold-Plated Trading Limited Edition - Mewtwo 23k Gold Card - Etsy

In a deck where you can generate infinite mana, you can just mill the table out on the spot with this

Thats not as much of an issue in Commander where tournaments arent as common, but is a big problem in Standard or Modern where card recognition is integral to the format

Below is what the Three Admiral Manga Rares are trading for in Japan, how EN prices compare, and where the market has actually landed since launch, including a correction to the earlier "prices are settling down" read on the Admiral Manga Rares

You can also use it repeatedly turn after turn, meaning you can keep future artifacts in check where single-target spells couldnt