yu yu hakusho booster box Amazon.com: Ghost Files : Toys & Games have ultrarare collectible that Yu Yu Hakusho fans won’t want to miss Union Arena - Booster Box

I was so concerned with Kain's control effect being downside or needing to hurt the opponent that I hadn't even considered the card could instead switch sides but give you an upside when you gave him away

Worth noting that this is a clear sign of his Character Development

Forrest Schehl, Senior Worldbuilding Art Director: Fan feedback is super important to us and is something we take into consideration during early development of every new set we make

With this card, the player can turn all of their Prize cards face up into play where they stay for the rest of the game

Basically, names get confirmed, thats mostly it