Card Trivia:Sacred Noble Knight of King Custennin
- This card and "Noble Knight Custennin" are based off of "King Constantine". According to the pseudo-historical text "Historia Regum Britanniae", he was the successor to "King Arthur".
- "Custennin" is Old English for "Constantine".
- This card's OCG name is a reference to the figure Custennin Corneu (Constantine of Cornwall).
- The "Holy Grail" can be seen in this card's artwork.