You can order Royal Blood booster boxes from Tako Games & Collectibles supporting your local game store or specialty retailers like TakoGNC helps the community and you might get promo packs alongside your purchase
The value of this card is mainly due to its status as a Judge Gift Card from 2018, a practice involving distributing cards to judges in MTG Tournaments, a practice which has since ended
The other equally obvious, and perhaps better home is a Goblin typal deck
The Worst Generation Starter Deck includes Eustass"Captain"Kid (Leader Card), Vito, Urouge, Capone"Gang"Bege, Killer, Koby, Jewelry Bonney, Scratchmen Apoo, Trafalgar Law, Basil Hawkins, Heat, Bepo, Eustass"Captain"Kid, X.Drake (Character Cards), Scalpel, Repel, and Straw Sword (Event cards)
Getting to start the game with a virtual eighth card is amazing, and for any deck that can get lots of value out of Yorions enters-the-battlefield ability, it is an unbelievable utility to have