If I have 2 Double Turbo Energy Cards attached to one of my Pokemon, would its Attack damage be reduced by 20 or 40?
It would be reduced by 40 since each card's reduction would apply.
Source: Brilliant Stars FAQ; TPCi Rules Team (2022-02-24)
If I use Dusknoir's "Special Transfer" Ability to move an Aurora Energy to another Pokemon, do I have to discard a card from my hand per Aurora Energy's text?
Special Transfer is "moving" the Special Energy to another Pokemon, not "attaching" it like you would from your hand. So since the Aurora Energy is already in play you do not have to discard a card from your hand in this situation.
Source: Brilliant Stars FAQ; TPCi Rules Team (2022-02-24)
Can I use Dusknoir's "Special Transfer" Ability after I attack but before my turn ends to move Special Energy cards (such as Double Turbo Energy) off of my Active Pokemon?
No, once your attack ends, your turn ends.
Source: Brilliant Stars FAQ; TPCi Rules Team (2022-02-24)
If Dusknoir with the "Spectral Breach" Ability is already in play and then Fusion Strike Energy is attached to a Pokemon (either mine or my opponent's), does Fusion Strike Energy prevent "Spectral Breach" from affecting it, or does "Spectral Breach" disable Fusion Strike Energy's effects?
When Fusion Strike Energy gets attached to a Pokemon it prevents the effect of Spectral Breach, therefore providing every type of Energy and preventing all effects of your opponent's Abilities done to that Pokemon.
Source: TPCi Rules Team (2021-12-23)
If I have an Alolan Raichu with Speed Energy attached or a Starmie with Wash Energy attached, if I use their "Electro Rain" or "Multishot Star" attacks and discard those Special Energy cards would it get through Duraludon VMAX's "Skyscraper" Ability or not?
Because you don't know how many targets to select until you discard all the Energy, the process is to discard the Energy first, then choose which Pokemon take damage, and then apply damage. Since for those particular attacks the discard happens first and THEN damage is applied, as long as there are no other Special Energy cards attached to Alolan Raichu or Starmie the damage would not be blocked by Skyscraper.
Source: TPCi Rules Team (2021-12-02)
When my opponent has Goodra with the "Slimy Room" Ability in the Active Spot, if I try to attach an Aurora Energy to one of my Pokemon and I flip tails, do I have to discard a card for the cost of Aurora Energy too?
No, since the flip happens before it is attached, if Aurora Energy is discarded you do not have to discard another card along with it.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
If my opponent has Goodra with the "Slimy Room" Ability in the Active Spot, do I still have to flip a coin to attach an Energy to one of my Pokemon that already has a Fusion Strike Energy card attached to it?
Yes you still have to flip a coin, because the Slimy Room Ability is acting on you the player not on a specific Pokemon; and Fusion Strike Energy's effect applies to the Pokemon it is attached to, therefore it does not block Slimy Room's effect.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
If I have Hiding Energy or Snow Leaf Badge attached to my Active Pokemon, would my opponent's Leafeon VMAX's "Grass Knot" attack do any damage to it or not? If yes, would "Phoebe" remove the effect of Hiding Energy or Snow Leaf Badge for the damage calculation of "Grass Knot"?
The effects of Hiding Energy and Snow Leaf Badge are not blocking any damage from the attacking Pokemon, they are changing the stats of the Pokemon they are attached to. So they are not really affecting the damage done by Grass Knot; it is still 60x the Retreat Cost, but the Retreat Cost is now effectively zero. And since those cards are not affecting the damage being done (they're only affecting the Retreat Cost), Phoebe will not help it do more damage.
Source: TPCi Rules Team (2021-10-07)
If I have four Plasma Energy in play, either on the field and/or in the Discard Pile, can I use Colress Machine to search through my deck, find nothing, and shuffle my deck?
No you cannot. Since the location of all four Plasma Energy cards are known, there's no way Colress Machine would be able to find one during a deck search.
Source: TPCi Rules Team (2013-02-28); TPCi Rules Team (2021-07-01)
Can I use Porygon-Z's "Crazy Code" Ability to attach Impact Energy to a Pokemon that isn't a Single Strike Pokemon?
Yes you can, but then it would get discarded immediately. However, if that Pokemon was Poisoned, Impact Energy would remove the Special Condition.
Source: TPCi Rules Team (2021-07-01)