Common cards feature black set symbols and show up frequently
Tragic Villain: It's eventually revealed that their villainy is a result of Don Thousand corrupting their souls and altering their memories with the Over Hundred Numbers as well as seriously screwing up their past lives where they all used to be benevolent heroes so that they would all die brutal/tragic deaths and with immense hate in their hearts, all to make it so they would be revived in Barian World instead of Astral World
This card, paired with the reliable token-maker Urabrask's Forge (another spiking card), has enabled a brand new archetype: Boros Token Control

Advanced Search Sets Random Syntax Agency Outfitter Alhammarret, High Arbiter Arbiter of the Ideal Argent Sphinx Atemsis, All-Seeing Belltower Sphinx Cerulean Sphinx Chancellor of the Spires Citywatch Sphinx Cloudreader Sphinx Consecrated Sphinx Conspiracy Unraveler Conundrum Sphinx Curator of Destinies Curator of Mysteries Dazzling Sphinx Defiler of Dreams Dream Eater Eligeth, Crossroads Augur Enigma Thief Glyph Keeper Goliath Sphinx Guardian of Tazeem Horizon Scholar Inspired Sphinx Jwar Isle Avenger Marauding Sphinx Master of Predicaments Master of Winds Ominous Sphinx Ormos, Archive Keeper Prognostic Sphinx Quantum Riddler Rescuer Sphinx Riddlemaster Sphinx Scholar of the Lost Trove Serra Sphinx Serum Sovereign Sharding Sphinx Sphinx Ambassador Sphinx Mindbreaker Sphinx of Clear Skies Sphinx of Enlightenment Sphinx of Foresight Sphinx of Forgotten Lore Sphinx of Jwar Isle Sphinx of Lost Truths Sphinx of Magosi Sphinx of Uthuun Sphinx of the Chimes Sphinx of the Final Word Sphinx of the Second Sun Stoic Sphinx Unesh, Criosphinx Sovereign Vexing Sphinx Watcher of Hours Windreader Sphinx Witness of Tomorrows

This two-card set was released in Japan on 26 June 2015 to commemorate the opening of Pokmon Center Hiroshima