Trainers » Lost World
Let's say I have no cards left in my deck when my opponent's turn ends, the "Lost World" Stadium is in play and my opponent has 6 Pokemon cards in the Lost Zone. Can I declare myself the winner at the beginning of my turn, before drawing a card from my deck?
No you can't. You can only declare yourself the winner with the effect of Lost World during your turn, but since you can't draw a card from your Deck you cannot start your turn, and therefore you lose.
Source: Call of Legends FAQ (2011-02-10), PUI Rules Team (2011-02-10)
Trainers » Black Belt
If I have more prizes remaining than my opponent and I play Black Belt, but then I KO one or more of my opponent's Pokemon before I attack, would I still be able to use the effect of Black Belt if I'm no longer behind on prizes?
Yes, you can. The requirement of being behind on prizes is just for playing the card, and once it's in play you can use its effect even if you are no longer behind.
Source: PUI Rules Team (2011-01-27)
Trainers » Seeker
Can I use Seeker if either player has no Benched Pokemon, or do both players need to have at least one Pokemon on the Bench?
If there's a Pokemon on either player's Bench, Seeker can be used.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
Trainers » Twins
Do I have to choose 2 cards when I play Twins and search my deck?
Yes, since the card says "any 2 cards" and not "up to 2 cards". And if you only have 1 card remaining in your deck, you must take that card.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
Trainers » Junk Arm
When the Junk Arm trainer says "you can't choose Junk Arm", does it mean any Junk Arm already in the Discard Pile, or just this specific card?
It means you can't get any Junk Arm cards from the Discard Pile.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
Trainers » Legend Box
On the part of Legend Box where it talks about "you can play only 1 Pokemon LEGEND in this way", is that just for the play of the card, or for the entire game?
It only lasts for as long as the Trainer is being used. It just means that if you reveal two or more complete Pokemon LEGENDs that you can only put one of them onto your bench for that trainer card played.
Source: PUI Rules Team (2010-09-23)
Trainers » Flower Shop Lady
When using "Flower Shop Lady", do I have to put all 3 Pokemon and all 3 Basic Energy cards into my deck, or can I choose to return only 1 or 2 (or none) of each?
You must return all three of each if you are able to (or as many as you can if you have less than three). The card does not say "up to 3".
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Trainers » Energy Exchanger
Can I use Energy Exchanger to trade a Basic Energy for a Special Energy card?
Yes, the Trainer does not restrict its effect to only Basic Energy cards.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Trainers » Good Rod
If you don't have a Pokemon or a Trainer in your discard pile, can you play "Good Rod"?
No. You can't play a trainer or supporter if it's public knowledge that it won't have any game effect. If you have at least one Trainer or Pokemon in your discard pile, you can play Good Rod.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)