Team Magma vs Team Aqua is a set in the EX series. It was released on March 1, 2004. The printed size is 95. This checklist is longer, at 97 cards. Double Rainbow Energy is 88/95, in position 88 of 97 on this checklist. Before it is 87 Magma Energy, and after it is 89 Blaziken ex. The listed rarity is Rare.
Double Rainbow Energy is an Energy card. It is listed as Special.
Takumi Akabane illustrated this card. The same name is on 51 other cards in the catalog.
The card text says: Double Rainbow Energy can be attached only to an Evolved Pokémon (excluding Pokémon-ex). While in play, Double Rainbow Energy provides every type of Energy but provides 2 Energy at a time. (Doesn't count as a basic Energy when not in play and has no effect other than providing Energy.) Damage done to your opponent's Pokémon by the Pokémon Double Rainbow Energy is attached to is reduced by 10 (after applying Weakness and Resistance). When the Pokémon Double Rainbow Energy is attached to is no longer an Evolved Pokémon, discard Double Rainbow Energy.
I keep a set binder for Team Magma vs Team Aqua, meant to hold every card of that set. This card is one slot in the Team Magma vs Team Aqua set binder. I still need this card.