Here's a nice combo with MP Mewtwo and Energy Flow from Gym Heroes.
Name: Energy Flow
Text: For each of your Pokemon, you may return any number of Energy cards
attached to it to your hand.
Use Mewtwo's Energy Absorbtion to get 2 energies from your discard. Next turn
play the Energy Flow Trainer to get back the energy into your hand! Since it
say's you "return any number of Energy cards, " you can get back
Double Colorless energy, Full Heal energy, Potion energy, and Rainbow energy!
Energy Flow will also work great with Rain Dance decks, and Damage Swap Decks!
In a Rain Dance deck, simply use Energy Flow to get back wasted energy from your
bench Pokemon.
In a Damage Swap deck, use Energy Flow to get back energy before you use
PokeCenter to remove damage.
fatboy@gymleaders.com