If I have a Honchkrow V with "Boss Pockets" Ability and 190 damage on it and three Emergency Jelly tool cards are attached, do all of the tool cards trigger at the same time or do they trigger sequentially?
They trigger in sequence, so the first Emergency Jelly would remove 120 damage and get discarded, but the second & third Emergency Jelly would not trigger since there is now more than 30 HP remaining and no more damage would be healed.
Source: TPCi Rules Team (2023-04-13)
If I have 6 cards in my hand and use Mimikyu's "Impersonation" attack to discard Erika's Hospitality from my hand, can I use the effect of Erika's Hospitality?
Since you have 5 cards in your hand after discarding the Erika's Hospitality you can use its effect.
Source: TPCi Rules Team (2023-04-06)
If Temple of Sinnoh is in play, can I use Archeops' "Primal Turbo" Ability to attach a Rapid Strike Energy from my deck to a non-Rapid Strike Pokemon?
Yes, you can use Primal Turbo to attach Rapid Strike Energy to a non-Rapid Strike Pokemon. Normally Rapid Strike Energy would be discarded immediately, but Temple of Sinnoh removes all effects of Special Energy attached to Pokemon, so Rapid Strike Energy would not be discarded. But if Temple of Sinnoh's effect goes away, then Rapid Strike Energy would be discarded.
Source: TPCi Rules Team (2023-04-06)
Beginning with the Scarlet & Violet expansion, cards like Pokemon Catcher will now say "switch in 1 of your opponent's Benched Pokemon" to make it clear that the effect is on the Benched Pokemon. Likewise, the phrase "switch out" will be used if the effect is on the Active Pokemon. Older prints of these cards with different text that have the same game effect will therefore remain legal.
Source: Scarlet & Violet FAQ; TPCi Rules Team (2023-03-30)
Can I use Rare Candy on a Scatterbug the first turn of the game or the turn that Scatterbug is played, since "Adaptive Evolution" says it can evolve in those cases?
No, you can't use Rare Candy to evolve in either of those conditions because the text on Rare Candy specifically prevents it.
Source: Scarlet & Violet FAQ; TPCi Rules Team (2023-03-30)
Beginning with the Scarlet & Violet expansion, "Pokemon Tool" will be its own category of Trainer card; Pokemon Tool cards will no longer be printed as Item cards. Pokemon Tool cards from all previous series will receive errata to align with this change, meaning that older Tool cards are no longer considered as "Item cards".
Source: TPCi Announcements (2022-12-12) [https://www.pokemon.com/us/pokemon-news/2023-pokemon-tcg-standard-format-rotation-and-pokemon-tool-errata]; Scarlet & Violet FAQ; TPCi Rules Team (2023-03-30)
If I use Sky Seal Stone's "Star Order" Ability and then my Basic Pokemon V's attack knocks out my opponent's Active Mew VMAX with a Fusion Strike Energy attached, do I take an additional prize card or not?
Fusion Strike Energy prevents all effects of your Pokemon's Abilities done to the opponent's Fusion Strike Pokemon the energy card is attached to; but the effect of Star Order is not on the opponent’s Pokemon, so you get to take the extra prize.
Source: TPCi Rules Team (2023-01-26)
Does Sky Seal Stone's "Star Order" Ability apply if my Active Basic Pokemon V is not the one with Sky Seal Stone attached?
Yes, using Star Order applies to ANY of your Basic Pokemon V for the rest of your turn.
Source: TPCi Rules Team (2023-01-26)