Altaria has a printed weakness to Lightning, but it also has the "Clear Humming" Ability which creates an effect that gives it no weakness. What happens if it is attacked by Zebstrika with the "Zap Zone" Ability which makes its attack's damage ignore effects on the defending Pokemon? When Zebstrika attacks Altaria, is the damage altered by weakness or not?
Zap Zone refers to "any effects on your opponent's Active Pokemon", but the term "any effects" does not include effects that alter Weakness or Resistance. So in this case Zebstrika's attack will NOT be increased for Weakness, due to Clear Humming.
Source: TPCi Rules Team (2016-03-24), TPCi Rules Changes Announcement (2017-05-03), TPCi Rules Changes Announcement (2017-05-18)
If Vileplume's "Allergy Panic" Ability is in effect, does Rayquaza's "Shred" attack consider a Defending Pokemon's weakness as x2 or x4?
Shred 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 the Defending Pokemon's Weakness would be x4 due to Allergy Panic.
Source: TPCi Rules Team (2013-02-28), TPCi Rules Changes Announcement (2017-05-03), TPCi Rules Changes Announcement (2017-05-18)
What happens to Gothitelle's "Tractorbeam" attack if the opponent has no benched Pokemon?
If you can't switch a new Pokemon, the attack doesn't do any damage.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
What happens if I use Politoed's "Roll Call" attack and cannot find a Poliwag, Poliwhirl and/or Poliwrath in my deck?
When performing an attack you do as much of it as you can. And since the contents of the deck are unknown you can also voluntarily fail to find one or more of the Pokemon you are searching for.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
What happens if I have less than three spaces on my bench when using Politoed's "Roll Call" attack? Or what if I don't have any room on my bench at all?
You can use the attack no matter how many Pokemon are on your Bench, but you can only get as many Pokemon as you have spaces on your Bench.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
If I have more than one Dhelmise in play, do I get to add 10 damage for Metal Pokemon attacks for each one of their "Steelworker" Abilities?
Yes, they will stack.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
For Chandelure's "Shady Move" Ability, am I allowed to move a damage counter from one of my Pokemon to one of my opponent's Pokemon?
Yes, you can.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
For Salazzle's "Hot Poison" Ability, can I choose to only Poison or only Burn the opponent's Active Pokemon? Or do I have to do them both?
No, you must either apply both Special Conditions (if you are able to), or not use the Ability.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)
What happens if I try to use Chandelure's "Shady Move" Ability to move a damage counter from my Pokemon to one of my opponent's Pokemon while they have a Machoke with "Daunting Pose" Ability in play? And what happens if I try to move one of my opponent's damage counters from one Pokemon to one of their Benched Pokemon.
In both cases Shady Move would remove the damage counter from the first Pokemon, but the second Pokemon would not receive it because it is protected by Daunting Pose. If you try to move damage *to* something that blocks effects, the damage disappears; if you try to move damage *from* something that blocks effects, the damage stays there. But Daunting Pose only prevents putting damage counters ON your Benched Pokemon; it does not prevent taking damage counters OFF your Pokemon.
Source: Guardians Rising FAQ (2017-04-22), TPCi Rules Team (2017-05-04)