Cubone - 51/109 - Common is a Common Card from the Ex Team Rocket Returns Singles Pokemon set.
This is a Pokemon Single Card. 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!".