yugioh color test card Test] Platinum Secret Rare by wisleur on DeviantArt Supreme Darkness Every TCG Has a Story:

Card Number: #143/086 Rarity: Illustration Rare 8

Ten of them comprise the Signet cycle, two are sideboard fodder, and the other two might be reasonable targets: Tower Gargoyle and Basilisk Collar

The first two are well-established Commander staples, while Hammer still sees play in its namesake deck in Modern

You know the ones: Gloomlake Verge, Blazemire Verge, Floodfarm Verge, Hushwood Verge, and Thornspire Verge

It might seem oddly specific to complete, with the requirement being your opponent only having one Prize Card left, and it costs three Colorless Energy to use, but it hits for a whopping 280 damage - enough to OHKO a Giratina VSTAR [Lost Origin]