6 cards where the illustration contains “amethyst”

Briber's Purse (Khans of Tarkir #217)
Crosis's Attendant (Invasion #300)
Forever Young (Throne of Eldraine #89)
Thorn of Amethyst (Lorwyn #262)
Thorn of Amethyst (The Brothers' War Retro Artifacts #123)
Vindictive Lich (Commander 2017 #21)

Though this query has ended, its relics still slumber in New Argive.