If I use Bronzong's "Legend Ceremony" attack, can I search my deck for only one Pokemon LEGEND half?
No. If you cannot find both halves, you can't get any Legend pieces. It's both halves or nothing.
Source: PUI Rules Team (2011-02-03)
If I use Bronzong's "Legend Ceremony" attack, can I choose halves from different Pokemon LEGENDs?
No, both halves must be from the same Pokemon LEGEND.
Source: PUI Rules Team (2011-02-03)
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)
When using Smeargle's "Portrait" Poke-POWER, can I choose a Supporter that will have no effect?
You cannot pick a supporter you couldn't normally use; for example you can't choose "Twins" unless you are behind on prizes at that time, nor Aaron's Collection if you don't have anything in your Discard Pile. You would have to choose a different Supporter if one is available.
Source: PUI Rules Team (2010-12-09)
What happens if I use Smeargle's "Portrait" Poke-POWER, but I cannot satisfy the conditions of any of my opponent's Supporters?
You get to look at the opponent's hand, and that's all.
Source: PUI Rules Team (2010-12-09)
Can I use Murkrow's "Switcheroo" attack to move an opponent's "Energy Gain" to a non-SP Pokemon?
Yes you can, but if the Pokemon you move the Energy Gain to is not a Pokemon-SP then the tool would be discarded after it gets moved.
Source: PUI Rules Team (2010-11-18)
Can I use Machamp's "Fighting Tag" Poke-POWER to switch him with the Active Pokemon if the current Active has no Fighting Energy attached to it?
No, if you don't move any Fighting energy you cannot switch Machamp with the Active Pokemon.
Source: PUI Rules Team (2010-11-18)
When Yanmega tries to attack, do you evaluate the number of cards in your hand for the "Insight" Poke-BODY before or after discarding a card for Giratina Lv.X's "Invisible Tentacles" Poke-BODY?
The Insight Poke-BODY is evaluated before your attack even begins; therefore it is checked before discarding any cards for Invisible Tentacles.
Source: PUI Rules Team (2010-11-11)
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)
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)