Q. Does playing a Rainbow Energy from your hand onto a Wooper or a Quagsire allow you to use the "Saturation" Poke-BODY?
A. Yes it does. The effects would also be simultaneous - player would choose the order of effects between Saturation and Rainbow Energy. And as a side note, the Pokémon would not be Knocked Out until both of the simultaneous effects were resolved. (Jun 23, 2005 PUI Rules Team)