Origin
Double-Edge, formatted on this card as Double-edge, is a move in the Pokémon games that Chansey can learn. This card's English Pokédex entry comes from Pokémon Red and Blue, though it is slightly reworded. The Japanese entry comes from Pokémon Red and Green.

This card was included in the Base Set with artwork by Ken Sugimori, first released in the Japanese Expansion Pack. In Japan, this card was reprinted with artwork by Kaori Samoya, one of five winning entries of the 64 Mario Stadium Pokémon Snap Best Photo Contest held in Spring 1999. It has a camera graphic where an expansion symbol would usually be and has text on the bottom right of the "Snap" print reading Best Photo Contest Winners Prize Card. This version is extremely rare and the exact number in existence is unknown. The Base Set print was later reprinted in the Base Set 2 expansion.

In Mysterious Treasures, an almost-identical Chansey card was released; however, due to the HP, weakness, resistance, Retreat Cost and self-infliction from Double-edge varying, it cannot be considered a reprint.