If I use Virizion's "Bail Out" attack, can I choose to put zero Pokemon into my hand if I have any Pokemon in my discard pile?
No, if you choose to do the attack and you have a Pokemon in the discard pile, you have to choose at least one of them. But remember, you can always choose to pass and not attack.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
Is Rillaboom VMAX's "G-Max Drum Solo" or Cloyster's "Aqua Split" attacks' bench damage amount split between the two chosen Pokemon (20+20 or 10+30, etc.) or does it do 40 or 30 damage to each of them?
The attack does 40 or 30 damage to each of the two chosen Pokemon.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
If my opponent used Turtonator's "Shell Trap" attack and I have Espeon VMAX with the "Solar Revelation" Ability in play, will my Attacking Pokemon with energy attached receive the 8 damage counters from "Shell Trap" if I attack and do damage to Turtonator?
No, it will not receive the 8 damage counters. Solar Revelation prevents all effects of your opponent's attacks, and Shell Trap's damage counters are an effect of your opponent's attack.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
When my opponent has Goodra with the "Slimy Room" Ability in the Active Spot, if I try to attach an Aurora Energy to one of my Pokemon and I flip tails, do I have to discard a card for the cost of Aurora Energy too?
No, since the flip happens before it is attached, if Aurora Energy is discarded you do not have to discard another card along with it.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
If my opponent has Goodra with the "Slimy Room" Ability in the Active Spot, do I still have to flip a coin to attach an Energy to one of my Pokemon that already has a Fusion Strike Energy card attached to it?
Yes you still have to flip a coin, because the Slimy Room Ability is acting on you the player not on a specific Pokemon; and Fusion Strike Energy's effect applies to the Pokemon it is attached to, therefore it does not block Slimy Room's effect.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
While Goodra's "Slimy Room" Ability is active, if I use an Ability or card effect like Swampert's "Muddy Maker" Ability to attach an Energy card from my hand but flip tails, can I use that ability or effect when I try again with another energy?
No. The Ability has been used and the energy is discarded even though your regular Energy attachment for the turn has not been used up.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
While Goodra’s “Slimy Room” Ability is active, if I try to attach an Energy card but flip tails and have to discard my energy instead of attaching, can I try again?
Yes, as long as you can get another Energy card in your hand.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
If I have multiple Toxtricity with the "Maximum Downer" Ability in play, will my opponent's VMAX Pokemon have -30 HP for each one?
There is no restriction about multiple Maximum Downers being in effect; in other words, yes it stacks.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
Can I use Inteleon VMAX's "Double Gunner" Ability if my opponent only has 1 Benched Pokemon?
Yes you can, but not if they don't have any Benched Pokemon.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)
Does Chandelure VMAX's "Cursed Shimmer" Ability prevent Maractus' "Ditch and Shake" attack from discarding any number of Pokemon Tool cards?
No, Cursed Shimmer only prevents the opponent from playing Pokemon Tool cards from their hand; that is not the same thing as discarding Pokemon Tool cards for Ditch and Shake.
Source: Fusion Strike FAQ; TPCi Rules Team (2021-11-11)