Trainers » Evosoda
Can I use Evosoda to search for a Mega Pokemon?
As long as it evolves from the Pokemon you choose, yes.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Attacks » Devolution Punch | Trainers » Devolution Spray | Gameplay » Evolving/Devolving
Can you use Devolution Spray or Golurk's "Devolution Punch" attack against a Mega Pokemon, and if so what happens to the Mega Pokemon?
Mega Pokemon are evolved Pokemon, so the Mega Pokemon card is removed, but the underlying Pokemon and all other cards attached stay in play (unless the Pokemon is KO'd, of course).
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Attacks » Gastro Acid
Arbok's "Gastro Acid" attack says the Defending Pokemon has no Abilities until end of your next turn. Is that referring to the opponent's next turn or the attacking player's next turn?
It refers to the end of the next turn of the player who used Arbok's attack.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Attacks » Gastro Acid
Arbok's "Gastro Acid" attack says the Defending Pokemon has no Abilities until end of your next turn. Does retreating get rid of the effect so you can use Abilities?
Yes, it does.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Abilities » Upside-Down Evolution
If I use Inkay's "Upside-Down Evolution" Ability, does it remain Confused after evolving?
No, it does not. The phrase "this counts as evolving this Pokemon" refers to evolution rules that remove Special Conditions on that Pokemon.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Abilities » Stance Change
When using Aegislash's "Stance Change" Ability, what do I do with the card after I switch it with an Aegislash from my hand?
The Aegislash that was in play goes into your hand.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Abilities » Stance Change
When using Aegislash's "Stance Change" Ability, do I have to switch the Doublade & Honedge underneath it too?
No, you only switch one Aegislash card for another Aegislash card.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Abilities » Stance Change
If I use Aegislash's "Stance Change" Ability, to switch for another Aegislash, can I then use the new Aegislash's "Stance Change" if I want to?
No, even though you have switched to a new Aegislash card you cannot use Stance Change again because the effect of using it remains on that Pokemon.
Source: XY FAQ (2014-02-06), TPCi Rules Team (2014-02-06)
Errata » Pokemon Catcher | Trainers » Pokemon Catcher
The wording of Pokemon Catcher is now as follows, "Flip a coin. If heads, switch 1 of your opponent's Benched Pokemon with his or her Active Pokemon." This card now requires a coin flip; making it functionally identical to Pokémon Reversal.
Source: TPCi Announcement (2013-10-01), TPCi Rules Team (2013-11-21)