They have been around since the earliest days, and being a fan favorite mechanic many have entered into the game
The emerald villain can be useful in an 'actions matter' deck and could be a great compliment for Alice, but he also has some stiff competition in the Emerald five-cost slot thanks to Kuzco, Temperamental Emporer and Ray, Easygoing Firefly
Being an entirely colorless deck also means you can (and should) run swathes of colorless artifact ramp
Master Duel: The Azure in the Ivory Secret Pack The Blue-Eyes White Dragon is another of Yu-Gi-Oh!s legendary Monsters from the earliest days of the anime and TCG, and players can pull the cards they need for a Blue-Eyes deck from The Azure in the Ivory Secret Pack
Illustrated by Brian Valeza Standard Legal Alchemy Not Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
Hand disruption is always good, and the potential to set your opponent down to just one card in hand with a single Supporter is obscenely strong