Is it OK to roll a dice to randomize my Rock-Paper-Scissors choice?
No. R-P-S is a game of strategy. You must not appear to be randomizing your choice by any method.
Source: PUI Rules Team (2008-10-16)
Can I use Eevee's "Call for Family" to search through my deck if I already have four Eevee in play or in the discard pile?
You can use the attack, but you cannot search your deck since it is public knowledge that you won't find an Eevee because all four copies of the card are already in known areas.
Source: PUI Rules Team (2008-07-17); TPCi Rules Team (2023-03-23)
Combusken's "Bulk Up" attack says "during your next turn, each of Combusken's attacks does 30 more damage to the Defending Pokemon". Does that mean the effect of "Bulk Up" only works if both Combusken AND the Defending Pokemon remain active?
The effect of Bulk Up only resides on Combusken's attacks. If the Defending Pokemon retreats, evolves, etc. the effect still remains on Combusken.
Source: PUI Rules Team (2008-05-08)
Once you have declared an attack, you cannot leave the attack step without your opponent's permission. If you declare an "illegal" attack (e.g., you don't have the proper energy required to perform the attack), you may ask your opponent's permission to back out of the attack step. If he or she says "yes", you can go back and take any actions that you could have taken prior to the attack step. If he or she says "no", you may either select an attack that is legal or you may pass.
Source: Organized Play Announcement (2007-03-14), PUI Rules Team (2007-03-15)
If an attack has an *optional* effect triggered by a discard, a Pokémon copying that attack must be able to do that discard in order to get the additional effect; if they cannot perform the optional discard, it still gets the base effect and damage.
Source: PUI Rules Team (2007-03-15)
Can you use Strike and Run, or Call for Friends type attacks to retrieve Fossils from your deck? What about using Pokémon Retriever to get them from your discard pile?
No, you cannot search for a Fossil trainer with any Pokémon searching technique.
Source: PUI Rules Team (2005-07-07)
Damage effects applied by the attacker (i.e. Nidoking's "Power Gene" adding +10 to Nidoqueen) are handled before weakness and resistance. Damage effects applied by the Defending Pokémon are handled after weakness and resistance.
Source: PUI Rules Team (2004-09-23)
If I flipped heads on Seadra's Agility attack, would that prevent Cradily's Spiral Drain from removing damage counters?
Agility only prevents damage and effects done to Seadra, not other effects that may extend to other Pokémon.
Source: PUI Rules Team (2004-03-25)
If Shiftry uses "Feint Attack" against a Pokémon that used "Smokescreen" the previous turn, would it have to flip for Smokescreen or not?
Yes it would have to flip. The effect of Smokescreen lies on the Shiftry, and Feint Attack only ignores effects on the DEFENDING Pokémon
Source: PUI Rules Team (2004-01-08)
If Shiftry uses "Feint Attack" against Whiscash with "Submerge" Poké-BODY on the bench, which one prevails? The attack or the Poké-BODY?
Feint Attack ignores ANY effect on that Pokémon which attempts to prevent its damage; the attack itself specifically states that the attack's damage isn't affected by Poké-Powers and Poké-Bodies (and other things as well).
Source: PUI Rules Team (2004-01-08)