A Prismatic Secret Rare card is a special variety of Secret Rare card where the holographic foil pattern follows a distinct horizontal and vertical parallel pattern as opposed to the usual diagonal pattern. In addition, the card name contains multiple speckled holofoil colors as opposed to one solid holofoil color.
This rarity name is only used in the TCG, where it is seldom seen in sets; on the other hand, almost all standard OCG Secret Rares use this prismatic pattern. Early TCG video game promos were Prismatic Secret Rare, but this style disappeared after video game promos became Super Rare. The pattern was later re-introduced to the TCG, included in World Superstars, instead of regular Secret Rares.
On the Official Card Database, this rarity is labelled as Secret Rare.