magic the gathering antiquities booster box Players card sleeve with retro package design is now available! Booster Box Prices | Magic

So, compare the back of your card to a card you know is authentic

Pokemon Card Game Illust Collection & Promo card Illustration Art Book Japanese [16092305] Pokemon Card Game Illust Collection & Promo card Illustration Art Book Japanese [16092305] Weight: 570g Not available Product Description Publication Year: 2014 Language: Japanese Format: B5 (25.7 x 18.2 x 1.4 cm) Page: 191 pages / full color Remark: 2 promo cards (Cosplay Pikachu: 099/XY-P and Rayquaza: 100/XY-P) Language: Japanese Format: B5 (25.7 x 18.2 x 1.4 cm) Page: 191 pages / full color Remark: 2 promo cards (Cosplay Pikachu: 099/XY-P and Rayquaza: 100/XY-P) Condition : Brand new

..." In Yu-Gi-Oh, cards that are rarely unreasonable are created, but this card is particularly special

While I cant find anything confirming why this is, its likely because its on the Reserved List, so Wizards is hesitant to errata something they cant reprint