If I have multiple Regenerative Energy cards attached to a Pokemon-V, will they each heal 100 damage when I evolve that Pokemon?
Yes, Regenerative Energy will stack.
Source: Silver Tempest FAQ; TPCi Rules Team (2022-11-10)
If I have 2 {P} Energy and an Aurora Energy or a Rainbow Energy attached to a Galarian Articuno and I use its "Psylaser" attack, do I have to discard the Aurora or Rainbow Energy since I'm not using them as {P} Energy?
Yes. Aurora and Rainbow Energy provide all types of Energy all the time when they are attached to a Pokemon, even if you don't want them to.
Source: TPCi Rules Team (2022-10-13)
If Temple of Sinnoh is in play and a player has a Basic Rapid Strike Sobble with a Rapid Strike Energy attached, and the player evolves to a Drizzile which is not a Rapid Strike Pokemon, does the Rapid Strike Energy get discarded or not?
Since the Rapid Strike Energy is already attached, it stays attached to Drizzile while Temple of Sinnoh is in play; however, it would be discarded from the Drizzile when Temple of Sinnoh leaves play.
Source: TPCi Rules Team (2022-10-06)
Does a poisoned Fusion Strike Pokemon with Fusion Strike Energy attached take additional damage counters from Radiant Hisuian Sneasler's "Poison Peak" Ability?
No, because Poison Peak is an Ability and Fusion Strike Energy prevents all effects of your opponent's Pokemon's Abilities.
Source: TPCi Rules Team (2022-09-29)
What happens if a Pokemon with Splash Energy attached is Knocked Out by an attack while Lost City stadium is in play?
The order of resolution for the effects can be decided by the owner of the Pokemon with Splash Energy attached to it. So the Pokemon can either go to the Lost Zone and stay there, or use Splash Energy to return the Pokemon to your hand.
Source: TPCi Rules Team (2022-09-08)
If Temple of Sinnoh is in play, does Meloetta's "Melodious Echo" attack still do 70 damage for each Fusion Strike Energy attached?
Yes. Temple of Sinnoh removes all effects and provides 1 Colorless energy, but it does not change the card name to be something other than "Fusion Strike Energy". So Melodious Echo still does 70 damage for each attached Fusion Strike Energy you have in play.
Source: TPCi Rules Team (2022-06-02)
When you attach "Rainbow Energy" from your hand to Skiploom with the "Solar Evolution" Ability, do you place the damage counter onto it before or after evolving to Jumpluff?
The owner of Skiploom can choose the order of the effects. They can choose to place the damage counter from Rainbow Energy before evolving; however, if they choose to use Solar Evolution first the effect of Rainbow Energy is ignored because Jumpluff is not the same Pokemon the energy was attached to.
Source: TPCi Rules Team (2022-04-28)
If you use Peonia and put a Treasure Energy or Dream Ball from your prizes into your hand, can you use the Treasure Energy or Dream Ball effect to attach it to one of your Pokemon?
Sorry, but Treasure Energy and Dream Ball only trigger when you are taking it as a face-down prize card, not when you are trading it with another card.
Source: TPCi Rules Team (2021-10-07); TPCi Rules Team (2022-04-07)
If I have a confused or poisoned Genesect V with 2 Fusion Strike Energy attached, and my opponent has a Cradily with the "Swaying Strangle" Ability in play, would I be able to Retreat after I have discarded the 2 Fusion Strike Energy cards as the cost, or would I no longer be able to Retreat?
Since you began the Retreat process while Swaying Strangle was prevented by the Fusion Strike Energy, you get to complete the action and Retreat even after discarding the 2 Fusion Strike Energy cards. The behavior is also similar with Flygon's "Labyrinth of Sand" ability or Snorlax's "Block" ability.
Source: TPCi Rules Team (2022-03-31)