Can I apply Jirachi's "Time Hollow" attack to a Stage 2 Pokemon and also the Stage 1 underneath it?
No. You only remove the highest stage evolution from the Pokemon you choose at the start of the attack. You cannot choose the same Pokemon more than once in order to remove additional Stages.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
If Spearow has less than 4 damage counters can I use its "Roost" attack?
Yes. You do as much as you can to perform the effect of the attack; in this case remove all the damage counters.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Can I use Dunsparce's "Return" attack with 6 or more cards in my hand?
Yes, it will do 10 base damage and you will not draw any cards.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
What happens if I have no cards in my hand and use Manaphy's "Deep Sea Swirl" attack?
You always have a hand, even it you have zero cards in it. So you shuffle your deck and draw 5 cards.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
If I have no bench, what happens when I use Lanturn's "Reflect Energy" attack?
Since there is no bench, you can't move the energy, but the damage is still done.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
My Larvitar is poisoned with 10 HP left. My opponent has one prize remaining and no cards in the deck. Can I attack with "Mountain Eater" and win the game?
You can attack, but if you can't discard the card you don't get to remove two damage counters. Larvitar will be KO'd between turns and your opponent will take the last prize.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Can I use Weedle's "Speed Evolution" attack on my first turn of the game or the turn it comes into play?
Yes. An attack can override the normal rules for evolution.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
The damage from Tyranitar's "Power Claw" attack isn't affected by Poke-POWERS, Poke-BODIES, or any other effects on the Defending Pokemon. Would you apply weakness and resistance to its damage?
Yes, weakness or resistance to Tyrantitar's type would be applied where appropriate. These are game rules and not considered effects on the Defending Pokemon.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Can I use Weedle's "Speed Evolution" attack to search my deck for Beedrill and place it on Weedle?
No, you can't choose Beedrill from the deck. Beedrill states it evolves from Kakuna, so it is not a card that evolves from Weedle.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Can I use Mantine's "Group Swim" attack to put one half of a Lugia LEGEND card in my hand?
Yes. Either half of the Lugia LEGEND card is still considered "a Water-type Pokemon", so you can search for it with Group Swim.
Source: HeartGold & SoulSilver FAQ (2010-02-11), PUI Rules Team (2010-02-11)