After using Unown VSTAR's "Star Cipher" attack while Path to the Peak is in play, I then use Spiritomb's "Ticking Terror" attack to change the Defending Pokemon's Weakness to {D}. If my opponent removes Path to the Peak from play, what will that Pokemon's Weakness be?
The Weakness will be {P}. Once Path to the Peak is removed from play Star Cipher's effect will reapply, and the most recent Weakness-changing effect takes precedent.
Source: TPCi Rules Team (2022-11-10)
If I use Unown VSTAR's "Star Cipher" attack while Dunsparce with "Mysterious Nest" Ability is in play, are my opponent's colorless Pokemon's Weakness set to {P} or do they have no Weakness at all?
The Star Cipher attack would switch your opponent's Pokemon's weakness to {P}, but then Dunsparce's Mysterious Nest would change all colorless Pokemon to no weakness.
Source: TPCi Rules Team (2022-11-10)
If I have Galarian Zapdos V with "Fighting Instinct" Ability active and an Earthen Seal Stone attached, and my opponent has 3 Pokemon V in play, can Galarian Zapdos V use Earth Sealing Stone's "Star Gravity" attack for free?
Yes, you can
Source: TPCi Rules Team (2022-11-10)
If my opponent has Milotic with "Dew Guard" Ability is in play, what happens if I play Sordward & Shielbert from my hand?
Since the opponent cannot answer the question due to the effect of Dew Guard, Sordward & Shielbert fizzles and nothing happens.
Source: TPCi Rules Team (2022-11-10)
If I have multiple V Guard Energy cards attached to a single Pokemon, will they each prevent 30 damage from my opponent's Pokemon V's attacks?
No, V Guard Energy does not stack. It specifically says on the card, "this effect can't be applied more than once at a time to the same Pokemon".
Source: Silver Tempest FAQ; TPCi Rules Team (2022-11-10)
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 you somehow get 4 Quad Stone back into your hand, can you play them all to heal all your Pokemon again?
Yes, you can.
Source: Silver Tempest FAQ; TPCi Rules Team (2022-11-10)
Can I use the VSTAR Powers of Earthen Seal Stone or Forest Seal Stone if they are attached to Pokemon-V that have not evolved into a Pokemon VSTAR yet?
Yes, that is correct. But keep in mind that you still can't use more than one VSTAR Power in a game, even if you evolve the Pokemon V into a Pokemon VSTAR later.
Source: Silver Tempest FAQ; TPCi Rules Team (2022-11-10)
If my opponent has no Weakness and I use Unown VSTAR's "Star Cipher" Ability, will my opponent's Pokemon become weak to Psychic?
If an opponent's Pokemon has no Weakness printed on the card, Star Cipher will give that Pokemon a x2 Weakness to Psychic.
Source: Silver Tempest FAQ; TPCi Rules Team (2022-11-10)