HeartGold & SoulSilver is a set in the HeartGold & SoulSilver series. It was released on February 10, 2010. The printed size is 123. This checklist is longer, at 124 cards. Rainbow Energy is 104/123, in position 104 of 124 on this checklist. Before it is 103 Double Colorless Energy, and after it is 105 Ampharos. The listed rarity is Uncommon.
Rainbow Energy is an Energy card. It is listed as Special.
Kent Kanetsuna illustrated this card. The same name is on 74 other cards in the catalog.
The card text says: Attach Rainbow Energy to 1 of your Pokémon. While in play, Rainbow Energy provides every type of Energy but provides only 1 Energy at a time. (Has no effect other than providing Energy.) When you attach this card from your hand to 1 of your Pokémon, put 1 damage counter on that Pokémon. (While not in play, Rainbow Energy counts as Colorless Energy.)
I keep a set binder for HeartGold & SoulSilver, meant to hold every card of that set. This card is one slot in the HeartGold & SoulSilver set binder. I still need this card.