What happens to the opponent's Energy if I use Krookodile's "Piston Headbutt" attack, but my opponent's Pokemon has Silver Mirror attached to it?
If Silver Mirror is attached to the Defending Pokemon and it is not a Pokemon-EX you cannot move an Energy off of it. If the Defending Pokemon does not have Silver Mirror attached, a Benched non-EX Pokemon with Silver Mirror is a valid target for the choice of where to move the Energy to, but since Silver Mirror prevents all effects of attacks done by Team Plasma Pokemon the Energy would be discarded rather than attached to the Benched Pokemon.
Source: TPCi Rules Team (2013-10-09)
Say you have Silver Mirror attached to one of your non-EX Pokemon, and it is the only remaining Pokemon. If your opponent's Beheeyem tries to attack with "Damakinesis", the six damage counters obviously don't get moved to the Pokemon with Silver Mirror since Beheeyem is a Team Plasma Pokemon; but do the damage counters get removed and then discarded, or do they not move at all?
The non-EX Pokemon with Silver Mirror attached is a valid target for the choice of where to move the damage counters to, but since Silver Mirror prevents all effects of attacks done by Team Plasma Pokemon the damage counters would be discarded rather than attached to the Defending Pokemon.
Source: TPCi Rules Team (2013-09-26)
Where do I put the Supporter card revealed with Random Receiver?
Read the Random Receiver card and you'll see it goes from the revealed cards into your hand before you shuffle. You do not put the card aside face up on the field nor shuffle before putting it into your hand. This applies to other cards that use the "reveal... put it in your hand... shuffle" template like Ultra Ball, etc.
Source: TPCi Rules Team (2013-08-15)
Can you use Computer Search and fail to find a card in your deck?
No, you cannot. When searching for a Pokemon, Trainer, or other particular type of card you can voluntarily fail the search because the contents of the deck are unknown; but when searching for "a card" of any kind the game can tell whether there are cards in the deck and you must take one if instructed to do so. Although the contents of the deck are unknown, the quantity of cards in the deck is known.
Source: TPCi Rules Team (2013-08-15)
Would Genesect EX be able to attack with "G-Booster" if the Defending Pokemon has Silver Mirror attached?
G Booster gets through because it ignores all effects on the Defending Pokemon, including Silver Mirror.
Source: TPCi Rules Team (2013-08-15)
In a prerelease or booster draft tournament where each player starts with only 4 prize cards, will Iris add 20 damage even if no prizes have been taken?
No, it does not. Limited format tournaments may start out with fewer prizes than the standard six, but that does not mean those fewer prizes count as being taken.
Source: Plasma Blast FAQ (2013-08-15), TPCi Rules Team (2013-08-15)
What happens if you play Ghetsis but your opponent does not have any Item cards in their hand?
Your opponent shuffles their deck (even though they did not put any cards into it) and you do not get to draw any additional cards.
Source: TPCi Rules Team (2013-06-20)
If I already have four Fire Energy cards in my Discard Pile, can I use Superior Energy Retrieval to discard two Fire Energy cards from my hand and retrieve the other four from my Discard Pile?
Yes, you may retrieve the other four. The restriction is you cannot return any of the cards to your hand that you used to pay this card's cost.
Source: Plasma Freeze FAQ (2013-05-16), TPCi Rules Team (2013-05-16)
How does the stadium card Frozen City interact when a player attaches Double Colorless Energy to a non-Team Plasma Pokemon?
You only place 2 damage counters because there was just one attachment, even though the attachment provided multiple energies.
Source: TPCi Rules Team (2013-05-16)