Might be from the Neo Era sheets
According to a Tokyo-based card retailer interviewed by Daily Shincho, even one of the most popular collectors cards in Japan, the Lillie Full Art card illustrated by Naoki Saito, has dropped from a $65,000 buying price to under $15k
Prompto Argentum Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Human Scout CMC: 2 Mana cost: USD: $1.80 EUR: 1.19 TIX: 0.00 EDHREC RANK: 10675 (2/2) Haste Selfie Shot Whenever you cast a noncreature spell, if at least four mana was spent to cast it, create a Treasure token
8 Wormadam This case is extremely strange because it doesn't even apply to normal TCG rules or tournament regulations for Pokemon
Its clear why these cards have become so popular and highly sought after: Their powerful design and utility brings a competitive element to the game that keeps everyone on their toes
Iron Man, Titan of Innovation Marvel ous