Card Trivia:Realm of Danger!
- This island appears in the artworks of "Danger! Disturbance! Disorder!", "Danger! Excitement! Mystery!", and "Second Expedition into Danger!".
- A map of this island appears in the artwork of "Danger! Response Team".
- This card's Japanese, "Umaria" (ユーマリア Yūmaria), is a portmanteau of "Eurasia" (ユーラシア Yūrashia) and "UMA" (
UMA Yūma).- "UMA" is a wasei-eigo acronym that stands for "Unidentified Mysterious Animal". It is commonly used in Japanese to refer to cryptids and other creatures of urban legends.