Say I have an Yveltal with "Fright Night" Ability as my Active Pokemon with Bursting Balloon attached, then I play Hex Maniac. What happens at the end of my opponent's turn, when they attack and do damage to Yveltal?
Hex Maniac works until the end of your opponent's turn. At the end of your opponent's turn, you check to see if Bursting Balloon gets discarded. So Bursting Balloon places the 6 damage counters, Hex Maniac's effect wears off, and then Fright Night is reactivated preventing Bursting Balloon from being discarded.
Source: TPCi Rules Team (2016-09-08)
Can I play Pokemon Ranger if there are currently NO effects on either player or their Pokemon?
No, you cannot. You cannot play a Trainer card for no net effect.
Source: TPCi Rules Team (2016-09-08)
Pokemon Ranger says "remove all effects of attacks on each player and his or her Pokemon." Does that mean it gets to remove any Poison, Paralyze, etc. effects that were caused by an attack?
No, Pokemon Ranger does not remove any Special Conditions. It removes effects like "the Defending Pokemon cannot retreat", "the opponent cannot play any Item cards from his or her hand", and things like that.
Source: TPCi Rules Team (2016-08-11)
When using Captivating Poke Puff can I choose to NOT put any Basic Pokemon onto my opponent's bench, or do I have to put at least one down if I'm able to?
No, you don't have to put any Basic Pokemon onto your opponent's bench if you don't want to.
Source: TPCi Rules Team (2016-08-11)
When I use Ninja Boy to swap out a heavily damaged EX Pokemon for one that is not an EX, if there's enough damage to KO it does the opponent take one prize or two?
Since the swapped in Pokemon is not an EX Pokemon, your opponent takes only one prize card for the KO.
Source: Steam Siege FAQ (2016-08-04), TPCi Rules Team (2016-08-04)
Captivating Poke Puff says to put any number of Basic Pokemon you find in your opponent's hand onto their Bench. Does this allow you to put more than 5 Pokemon on the bench?
No, Captivating Poke Puff does not allow you to exceed the normal limits of the game. You can put any number of Basic Pokemon onto your opponent's Bench up to the maximum size of the Bench.
Source: Steam Siege FAQ (2016-08-04), TPCi Rules Team (2016-08-04)
If I use Captivating Poke Puff and put one of my opponent's Basic Pokemon on the bench that has an Ability (like Shaymin EX's "Setup"), does the opponent get to use that Ability right away?
No, Captivating Poke Puff does not trigger any coming into play Abilities.
Source: Steam Siege FAQ (2016-08-04), TPCi Rules Team (2016-08-04)
If Silent Lab stadium is in play and one of my Basic Pokemon evolves into a BREAK Pokemon, would it be able to use the Ability from the underlying Basic Pokemon or not?
When it evolves into a BREAK Pokemon it is no longer a Basic Pokemon, so Silent Lab no longer affects it and you would be able to use the underlying Basic Pokemon's Abilities.
Source: TPCi Rules Team (2016-06-23)
If you use Umbreon's "Shadow Drain" attack against a Pokemon with {D} weakness and a Bursting Balloon attached, what are the correct order of operations for placing and healing damage?
Umbreon's healing effect takes place within the context of the attack, so healing has to be completed before the attack is finished. Since Bursting Balloon is triggered by damage and you can't interrupt the attack's other effect (healing) to place those damage counters, you would heal Umbreon first and then place the damage counters for Bursting Balloon.
Source: TPCi Rules Team (2016-06-09)