My opponent and I both have Sudowoodo with "Roadblock"Ability in play. I use Hex Maniac on my turn to shut off "Roadblock", and then I play 5 Pokemon on my Bench. My opponent plays 5 Pokemon on their Bench during their turn. At the end of my opponent's turn, Hex Maniac's effect ends, so "Roadblock" activates again. Who discards their Pokemon first? If the first player discards their Sudowoodo, would the other person need to discard a Benched Pokemon?
It's the opponent's turn, so their Roadblock goes into effect first. You would discard your Pokemon first, and then your opponent would discard theirs. Even if you chose to discard your Sudowoodo, your opponent would have to discard down to 4 Benched Pokémon because the Roadblock effects happen simultaneously.
Source: TPCi Rules Team (2017-05-25)
When using Potion, can I choose to heal less than 30 damage from my Pokemon?
If the Pokemon has 30 or more damage on it you must heal 30 damage, but if it has less than 30 damage you do as much as you can and heal all of it.
Source: TPCi Rules Team (2017-05-18)
When using Rough Seas, can I choose to heal only some of my {W} and {L} Pokemon or do I have to heal all of them?
If you choose to use Rough Seas you must heal all {W} or {L} Pokemon with damage counters on them.
Source: TPCi Rules Team (2017-05-18)
If Genesect EX uses "G Booster" to attack a Pokemon with Grass Weakness but that Pokemon has a Weakness Policy Tool attached, is Weakness applied or not?
G Booster isn't affected by "any effects on the Defending Pokemon", but the term "any effects" does not include effects that alter Weakness or Resistance. So in this case, Weakness is NOT applied.
Source: TPCi Rules Team (2015-02-26), TPCi Rules Changes Announcement (2017-05-03), TPCi Rules Changes Announcement (2017-05-18)
Can I play Ultra Ball if there are no cards left in my deck?
No, you cannot. Discarding the two cards is a cost not the effect, and you cannot play Trainer cards for no effect.
Source: TPCi Rules Team (2017-04-27)
Yveltal with "Fright Night" Ability knocks out Wobbuffet with the "Bide Barricade" Ability which was turning "Fright Night" off. Does Exp. Share on the Benched Pokemon behind Wobbuffet work?
Yes, since Wobbuffet was not yet in the Discard Pile, Fright Night remains off and Exp. Share works.
Source: TPCi Rules Team (2017-04-20)
Say I have an Active Pokemon with Energy Pouch attached and a Benched Pokemon with Exp. Share attached. If the Active Pokemon is KO'd, how do the effects of the tools resolve?
You may choose the order in which the tools' effects resolve. There is no preference of one tool over the other in this situation.
Source: TPCi Rules Team (2017-04-20)
Can I play Target Whistle and choose a Basic Pokemon in the Discard Pile with the Omega Barrier Ancient Trait, or does Omega Barrier block the Target Whistle?
Yes, you can put that Pokemon from the Discard Pile onto the Bench. Ancient Traits are only active when that Pokemon is in play.
Source: TPCi Rules Team (2017-03-30)