About the Mysterious Treasures Set
Mysterious Treasures was released in 2007. It belongs to the Diamond & Pearl series.
With 124 listed cards, this is a mid-size set by modern TCG standards. As of 2026, the set is 19 years old and fits a legacy-era profile.
In the Mysterious Treasures checklist, Spheal occupies position #102 as a Common card.










