Rainbow Energy MODTR 17

Attach Rainbow Energy to 1 of your Pokémon. While in play, Rainbow Energy counts as every type of basic Energy but only provides 1 Energy at a time. (Doesn't count as a basic Energy card when not in play.) When you attach this card from your hand to 1 of your Pokémon, it does 10 damage to that Pokémon. (Don't apply Weakness and Resistance.) (Major text change in Ruby/Sapphire. Requires reference.)