Abilities » Opponent's Choice
When using Slowking's "Opponent's Choice" Poke-POWER, do you have to show your opponent what the cards are since it says 'you may reveal the top 2 cards'?
Of course you have to show the opponent what the cards are. The "you may" refers to using the power, not to being able to use it without showing them the cards.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Abilities » Portrait
Can I use Smeargle's "Portrait" Poke-POWER if I have already used a Supporter this turn?
Yes, you are not playing a second Supporter, you are just using the Supporter's effect as the effect of the power.
Source: Undaunted FAQ (2010-09-09), PUI Rules Team (2010-09-09)
Abilities » Celebration Wind
When I use Shaymin's "Celebration Wind" Poke-POWER, can I move my energy cards in play around to any and all of my Pokemon that I want, or just to one Pokemon?
You can move the energy cards from more than one Pokemon and move them to more than one Pokemon, as desired. However, once you have taken another action, like playing a Pokemon card onto your bench, attaching an energy card from your hand, retreating your Active Pokemon, etc. you can no longer move any energy cards around.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Abilities » Sunny Heal
If I have multiple Cherrim in play, can I use more than one "Sunny Heal" Poke-POWER?
Yes, you can.
Source: Unleashed FAQ (2010-05-13), PUI Rules Team (2010-05-13)
Errata » Energy Healer | Abilities » Energy Healer
Three cards have been added to the list of errata for the Pokémon Trading Card Game. [...] The text below reflects what the card should say, not what was originally printed. "When you attach an Energy card from your hand to Onix, remove a damage counter from Onix." This Poké-Body only works when you attach an Energy card to Onix.
Source: PUI Rules Team (2010-05-06), TPCi Errata Update (2010-05-07)
Abilities » Roast Reveal
Can I use Ninetales' "Roast Reveal" Poke-POWER when I have no cards in my deck?
Yes, you do as much of the power as you are able; discard 1 Fire Energy card from your hand, then the Poke-POWER's effect ends, without drawing any cards.
Source: HeartGold & SoulSilver FAQ (2010-02-11), PUI Rules Team (2010-02-11)
Abilities » Afterburner
Can Typhlosion's "Afterburner" Poke-POWER be used if there is no Energy in the discard pile, just to place a damage counter on one of my Pokemon?
No. Since you can't attach an Energy from your discard pile to one of your Pokemon, you can't use the rest of the power.
Source: HeartGold & SoulSilver FAQ (2010-02-11), PUI Rules Team (2010-02-11)
Abilities » Second Sight
If my opponent has less than 3 cards in his or her deck, so that I can't reorder the top 3 cards, can I still use Slowking's "Second Sight" Poke-POWER to look at the remaining cards in the deck?
Yes, you look at your opponent's remaining cards, then put them back in the deck in any order.
Source: HeartGold & SoulSilver FAQ (2010-02-11), PUI Rules Team (2010-02-11)
Abilities » Vessel of Life
Can I use Shedinja's "Vessel of Life" Ability to attach it to a Pokemon that already has another Pokemon Tool card attached?
No, you cannot; the rulebook states "each Pokemon can have only 1 Pokemon Tool attached at any time". However, if there's an effect that overrides that rule, such as Genesect GX's "Double Drive" Ability, then you would be able to attach Shedinja to a Pokemon that already has another Pokemon Tool card attached.
Source: TPCi Rules Team (2018-12-27), TPCi Rules Team (2009-01-03)
Abilities » *Abilities in General
If I intend to use a Poke-POWER [or Ability], do I have to announce its name or can I just take the action specified?
You have to clearly communicate your intent to use a Poke-POWER [or Ability] by some method other than just performing its game effect. Show or tell your opponent which Pokémon is going to use what Power.
Source: PUI Rules Team (2008-11-13)