If I have already played a Supporter, can I then play Lt. Surge's Strategy since I would be able to play 3 Supporters in total?
No. You would have to play Lt. Surge's Strategy as your first Supporter in order to be able to play any additional Supporters during your turn.
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
Can I play Red's Challenge and fail the deck search?
No, because you are not searching for a specific type of card. It is public knowledge that your deck does have cards in it.
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
If I'm playing in a Prerelease with 4 Prize Cards, what happens if I have Beast Bringer attached to an Ultra Beast and I Knock Out a GX Pokemon as my first Knock Out?
Nothing happens. The card specifies that you must have exactly 6 Prize cards remaining but you only have 4.
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
If I use a Trainer card to switch my Active Pokemon that is affected by Poison from Muk & Alolan Muk GX's "Severe Poison" attack and Dust Island is in play, does my new Active Pokemon take the extra damage counters?
Yes, it does. Dust Island specifies that it is affected by "that Special Condition".
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
If my opponent uses Pokemon Catcher or Escape Rope while Dust Island is in play, is my new Active Pokemon still poisoned.
No, it is not. Dust Island only works when a Trainer card is used to switch your own Pokemon; it does not apply when the Trainer card is played by your opponent.
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
If I use Welder to attach {R} Energy to my Pokemon, do I still get to use my one energy attachment for the turn?
Yes, you do. Doing something via an effect does not use up the normal actions you get during your turn.
Source: Unbroken Bonds FAQ (2019-04-19), TPCi Rules Team (2019-05-02)
If Black Market {*} is in play, and an Active Darkness Pokemon with up to 3 Darkness energy and a Wishful Baton is Knocked Out by damage from an attack, can the player move all of the Darkness Energy from that Pokemon to another Pokemon and still get Black Market {*}'s effect?
Sorry, but no. Taking prizes is the last step when a Pokemon is knocked out; so after all the Darkness Energy is moved, the opponent would not take one fewer Prize card.
Source: TPCi Rules Team (2019-03-28)
Can I play Lost Blender if there are no cards left in my deck to draw from?
Yes, you can. Putting cards into the Lost Zone is the main effect, so you can use this even if you have no cards in your deck. However, you cannot play it unless you can put 2 cards from your hand in the Lost Zone.
Source: TPCi Rules Team (2019-01-03), TPCi Rules Team (2019-03-21)
Can I play Mysterious Treasure and discard a card if there are no cards left in my deck?
No, you cannot. Discarding the card is a cost not the effect, and you cannot play Trainer cards for no effect.
Source: TPCi Rules Team (2019-03-21)
Can I play Plumeria and discard two cards if my if my opponent has no energy attached to any of their Pokemon?
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 (2019-03-21)