Attacks » Agility
If a Raichu (or whatever) does Agility and flips heads, does an attack that would do damage to benched pokemon, or some other effect that does NOT do damage or something to Raichu work?
Yes it would, while all attacks are considered against the defending Pokemon (which is why something that prevents attacks would stop it in this case), Agility only prevents the effects of that attack if they affect Raichu only.
Source: WotC Chat (2001-07-19)
Attacks » *Attacks in General
It has been ruled that W/R does not apply to the bench unless specifically mandated by the card. Period. That is a meta-game rule. It was never intended that the W/R would apply to the bench unless specifically stated. Yes we do know that some Pokemon say not to apply W/R to the Bench. [But] if it doesn't say then you wouldn't apply Weakness and Resistance (the default for benched Pokemon is to NOT apply Weakness and Resistance). This has been verified.
Source: WotC Chat (2001-05-03)
Attacks » Amnesia
If Wooper uses Amnesia on Scyther's Slash, then Scyther retreats for another Pokémon, then that Pokémon [is Switched] for Scyther again, can Scyther use Slash?
Amnesia references the defending Pokemon, when that Pokemon is benched the effect ends.
Source: WotC Chat (2001-04-12)
Attacks » Smokescreen
If your Pokémon has been Smokescreened on the previous turn, and you choose an attack that requires you to do something (such as discarding Energy) in order to use the Attack, do you pay the attack costs before you flip for the Smokescreen Effect?
Yes before, you still attempt the attack; the Smokescreen might just stop it from having any effect.
Source: WotC Chat (2000-04-13), WotC Chat (2001-04-05)
Attacks » *Attacks in General
Say you are using a Golduck (from the Fossil set) and you use his Psybeam. Would this be a Psychic or Water attack?
A Water attack as Psyduck is a Water Pokémon. [Ed. Note: This answer can be generalized further: When a Pokémon attacks, that attack is considered to be an attack of that Pokémon's type; it's not dependent on the energy requirement.]
Source: WotC Chat (2000-08-31)
Attacks » *Attacks in General
When a card's attack "does damage to itself", is this damage considered to be an ATTACK against the Defending Pokémon? Let's say you had an Electabuzz versus a Team Rocket Porygon and Team Rocket Porygon switched Electabuzz's Weakness to Lightning. You Thunderpunched with Electabuzz and flipped tails. Would Electabuzz receive 10 or 20 damage? Furthermore, would Defender prevent this damage? (Defender prevents damage from attacks).
1) 20, it is considered an attack. 2) Well, assuming it was an attack that did damage to itself, then Defender would help with that damage.
Source: WotC Chat (2000-08-03)
Attacks » Agility
If my Pokémon uses Agility and get heads then on my opponent's next turn he benches his Pokémon, does that [Ed. Note: Agility's effect] end? If that Pokémon was Knocked Out, would Agility still be on the next Pokémon that he sends up?
Since the Agility Attack references Rapidash, only Benching or Evolving him ends the effect. Also since it only refers to Rapidash it would still be in effect if the other player benched.
Source: WotC Chat (2000-06-30)
Attacks » Agility
When using Raichu's Agility attack it states that if heads, Raichu will not receive damage until after the opponent's turn. If Raichu is poisoned and then gets heads, will he take damage from poison at the end of his turn?
Yes, Agility is referring to effects of attacks on Raichu during your opponent's next turn.
Source: WotC Chat (2000-06-01)
Attacks » Smokescreen
What about cards that do not state when the effect ends? Like Fossil Magmar's Smokescreen? I think for only one turn (the opponent's next turn), but some Apprentice people say it lasts until Magmar is Benched!
The effect says tries to attack during your opponent's next turn, so it only works on the next turn after you use the attack.
Source: WotC Chat (2000-05-04)