There are some good nuggets of info in here, for sellers looking at what to stock, collectors looking for whats the rage, and players looking at deck trends
Any card abilities which happen when a player pays a cost to use them (activated abilities) or automatically when specific conditions are met (triggered abilities) must also pass through the stack and can be responded to the same way (though you would need a card that says target ability to interact with one)
Amass Basic Energy cards in your hand with Firebreathers pyro skills, use Oricorio exs Excited Turbo Ability to attach those Energy to any of your Benched Pokmon, and set your opponents field ablaze with Mega Charizard X exs Inferno X attack, doing as much damage as you need
While Your Favorite Character will never be the most powerful commander, if you just really want to build a themed deck around, well, your favorite character, this is an option now