When using Palkia & Dialga LEGEND's "Time Control" attack, can you place more prizes than your opponent started the match with?
Yes, you can. The prize pile is not limited to any maximum amount.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
When using Darkrai & Cresselia LEGEND's "Moon's Invite" attack, can you move damage counters to/from more than one Pokemon?
Yes. Basically the attack let's you rearrange your opponent's damage counters any way you want, as long as other effects, Poke-POWERs, Poke-BODYs, etc. will allow.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
When using Darkrai & Cresselia LEGEND's "Moon's Invite" attack, can you put more damage counters on a Pokemon than it has HP left?
Yes, you can put as many on a Pokemon as you want to, as long as you have enough to move, of course.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
If I use Gengar's "Hurl into Darkness" attack, can I put a LEGEND Pokemon card (the top or bottom half) in the Lost Zone?
Yes, you can. Each half of a LEGEND Pokemon is treated as 1 Pokemon card.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
If I use Gengar's "Cursed Drop" attack, can I put damage counters on more than one of my opponent's Pokemon, or do I have to put all four counters on one Pokemon?
You can put the 4 damage counters on their Pokemon in any way that you like.
Source: Triumphant FAQ (2010-11-04), PUI Rules Team (2010-11-04)
When using Rotom's "Plasma Arrow" attack, I get to choose one of the opponent's Pokemon and do 20 damage for each Energy attached to it; but do I do the damage to the Defending Pokemon, or to the Pokemon I chose?
To the Pokemon that was chosen. If the damage were to be done to the Defending Pokemon, there would be a "20x" value in the damage field of the attack.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
When using Slowpoke's "Rambunctious Party" attack, can I choose no Basic Pokemon even if some are in the top 5 cards I drew?
Yes, you can choose as many or as few (including zero) as you like.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Can I use Slowpoke's "Rambunctious Party" attack if my Bench is full?
Yes you can perform the attack, but all you get to do is look at the top 5 cards and then shuffle them all back into your deck.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
When using Misdreavus' "Dual Draw" attack, do the players have to draw all 3 cards, or can they just draw 1 or 2 (or none)?
You must draw all three if you are able to (or as many as you can if you have less than three). The attack does not say "up to 3 cards".
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
What happens if one of the players doesn't have a benched Pokemon when using Drifblim's "Take Away" attack?
There is no restriction on using the attack if there is no benched Pokemon. If a player has no Benched Pokemon, that player loses. If neither player has Benched Pokemon, then it is a tie and a game of Sudden Death must be played.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)