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)
If my opponent uses "Mirror Shot" on my Active Pokemon, would I still have to flip a coin for my attack if I retreat?
No, retreating would clear the effect of Mirror Shot.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Can Espeon's "Solar Suggestion" attack place damage counters onto a Jolteon that can't be hit by effects due to a successful coin flip during its "Agility" attack, or onto a Toxicroak [G] with its "Anticipation" Poke-BODY enabled? If I can't place them, what do I do with the damage counters I removed from my Pokemon?
You cannot place damage counters onto that Jolteon or Toxicroak [G], but you can still remove damage counters from your own Pokemon. If you select a Pokemon under the status of not receiving effects, the damage counters that would be placed onto that Pokemon simply disappear from play.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)