Last week you said that many cards (Lass, etc.) don't require shuffling their deck if they don't have any cards in their hand (Nov 30, 2000, Q4 & Q15). But, a previous ruling for Gambler said that you DO have to shuffle (May 11, 2000, Q131). Please clarify & confirm. Thanks.
Read every card...on Gambler it specifically states 'shuffle your hand into your deck'. Since your 'hand' can be a 'hand' of zero cards you could shuffle if you had no cards in your hand in this case. However, cards that say trade a card in your hand for one in your deck, and you don't have one to trade; you can't shuffle in that case. Lass says 'shuffle all Trainer cards in your hand back into your deck. If you have no trainers, you can't shuffle your deck.
Certain attacks & powers (like Erika's Clefairy's Lunar Power attack, Koga's Kakuna's Emerge Pokémon Power, or TR Magikarp's Rapid Evolution attack), can break the standard "can't evolve turn 1 or the turn it was played" rule. You CAN play them on the first turn and you can sometimes even choose a Pokémon on your Bench that you just played this turn. To make it easier to understand, the standard evolution rules ("can't evolve turn 1 or the turn it was played") deal with the standard means of evolving; meaning taking the next Stage Pokémon from your hand and placing it on a Pokémon. Since these attacks and powers have you take a card from your deck and place it, they are NOT stopped by the standard evolution limits. This also falls under the term "played". Aerodactyl's Pokémon Power "Prehistoric Power" says No more Evolution cards can be played. The above attacks and powers would NOT be affected by this as those cards are not "played" (meaning played from your hand).
Scenario: It's down to one prize each, your turn with 10HP left, and you're poisoned. You attack and KO your opponent to draw your last prize. But you take poison damage and would be KO'd now too. Do you win or does it go to Sudden Death?
You win, you must complete the rest of the combat sequence, but then if you win BEFORE the end of the turn, you win, period. Poison doesn't happen until after the end of your turn.
Do you apply Pokémon Powers before status effects?
Check under 'How do you figure damage' in the Pokémon rules. Existing status effects are applied first, then Pokémon powers, then damage is assigned, then lastly new status effects from the attack are applied (basically).