Abilities » Energy Signal | Energy » Rainbow Energy
What happens if I attach a Rainbow Energy to Roserade with the "Energy Signal" Poke-POWER? Do I get to use both effects?
If the Energy card you attached provides all types (for example, Rainbow Energy), then both effects would trigger. Energy Signal would both Confuse and Poison the Defending Pokemon.
Source: PUI Rules Team (2010-09-30)
Energy » Rainbow Energy
If I have an attack that says to discard a Fire Energy and a Water Energy, may I discard a single Rainbow Energy card or Multi Energy card to satisfy that requirement?
No, even though Rainbow and Multi provide all energy types simultaneously, they only provide one unit of energy. You can discard it for either the Fire or the Water, but you would still need to discard at least one additional card of the required type.
Source: PUI Rules Team (2008-12-11)
Energy » Metal Energy (Special)
Does special Metal Energy reduce damage done to me from attacks by my own Pokemon?
Yes, as long as it is attached to a metal type Pokemon. But keep in mind that Metal Energy does NOT prevent the "placing of damage counters" (not same as "damage done").
Source: PUI Rules Team (2008-09-11)
Energy » *Energy Cards In General
The [default or normal] amount of energy an Energy card provides is equal to the number of energy symbols in the upper right or left corner of the card, regardless of how many different types of energy is provided.
Source: PUI Rules Team (2004-04-08)
Energy » Darkness Energy (Special)
The wording on Darkness Energy from the EX Ruby & Sapphire expansion says: "If the Pokémon Darkness Energy is attached to attacks, the attack does 10 more damage to the Active Pokémon". Does this mean that you get to add +10 even if an attack does no damage at all to the Defending Pokémon (i.e. EX Sandstorm Murkrow's "Surprise" attack)?
No, it still applies only if there was initial damage to add to. So in other words, you still have to do some damage in order to have "10 more" done.
Source: PUI Rules Team (2003-09-18)
Energy » *Energy Cards In General
A Special Energy Card remains a Special Energy card regardless of what happens to it. A Fire Burned Rainbow Energy may only produce Fire energy but it would still be considered a Special Energy card as well.
Source: WotC Chat (2002-02-14)
Energy » Rainbow Energy
If an attack says to discard a specific type of Energy card to use that attack, can a Rainbow Energy be used to pay that cost?
Yes, you can.
Source: WotC Chat (2001-10-11)
Energy » Rainbow Energy
Does Rainbow Energy count as Darkness and Metal energy?
For the purposes of paying the cost of an attack, yes. Though the additional effects will not be provided.
Source: WotC Chat (2000-11-09)
Energy » *Energy Cards In General
Any card that provides Energy is considered an Energy card of the type it provides. So if you were to Energy Burn a DCE, it counts as a Fire Energy card that provides 2 fire Energy until the end of the turn. So it could be Gathered by Team Rocket Charmander but would only provide 1 coin flip for the Continuous Fireball attack on Dark Charizard.
Source: WotC Chat (2000-07-06)