Can you use more than one Orbeetle VMAX’s “Eerie Beam” Ability per turn?
If a different Orbeetle VMAX becomes active you can use its Eerie Beam Ability, but each Orbeetle VMAX can only use its Eerie Beam Ability once per turn.
Source:
Vivid Voltage FAQ (2020-10-31), TPCi Rules Team (2020-11-12)
There’s a new deck building rule with Shedinja from Vivid Voltage. Shedinja with the “Shell Survival” Ability cannot be the only Basic Pokemon in your deck. You must have at least 1 other Basic Pokemon in your deck besides Shedinja with “Shell Survival”.
Source:
Vivid Voltage FAQ (2020-10-31), TPCi Rules Team (2020-11-12)
If I play Nessa on my turn while my opponent has “Shifty Substitution” in effect, do I still get to Paralyze the opponent’s Active Pokemon if I use Drednaw’s “Vise Wave” attack?
Yes, because even though Shifty Substitution replaces Nessa’s usual effect the Supporter card still has the same name, so Vise Wave will still paralyze your opponent.
Source:
Vivid Voltage FAQ (2020-10-31), TPCi Rules Team (2020-11-12)
If I have Eternatus VMAX with the "Eternal Zone" Ability in play, can my opponent use Mawile GX's "Captivating Wink" Ability to play any non-Darkness Pokémon onto my bench?
No, if Eternal Zone is working, your opponent cannot force you to put any non-Darkness Pokémon into play.
Can I use both Victini's "Victory Star" Ability and Glimwood Tangle stadium to reflip coins from an attack twice?
No, you cannot. You can use either the ability or the stadium, but not both of them. As a general rule, you can't use more than one reflip effect at a time.
If I use Devolution Spray Z to devolve Eternatus VMAX with "Eternal Zone" Ability with enough damage already on the devolved Eternatus V to knock it out, is it KO'd before having to reduce my Bench down to 5 Pokemon, or if I discard it to reduce my bench is it not KO'd?
Well if the Eternatus VMAX is active it would get KO'd after reducing the Bench, but if the devolved Eternatus V is on the bench you could discard it as part of the bench reduction to avoid a KO.