Mudsdale - SM20 - Pre-Release Promo is a Pokemon Promotional Card from the Pokemon Sun & Moon Promos Pokemon set.
This is a Pokemon Promo. The Pokemon (Pocket Monsters) franchise began back in 1996 as a video game by Satoshi Tajiri and Game Freak.
It has since gone on to become a world class TCG, toy line, Manga in CoroCoro magazine, movies and a hit anime series. We all know
"Gotta catch em all!".