I keep seeing posts about this belief that Lopunny packs are more likely to get you a Mega Charizard SIR, and I cannot stress enough how this is just a gambler's fallacy backed by confirmation bias.
I made a comment saying this, and I got a reply with a picture of an opened Lopunny pack with a Charizard SIR near it. I replied with a screenshot of one of the many people I've seen pull the Charizard out of a non-Lopunny art pack, and anyone can go online and watch the multitude of people pulling this card from non-Lopunny packs!
Its random! The people you see posting "proof" are the ones who already believe in the theory, so they're already paying more attention to the art, PLUS they're actively buying Lopunny packs, so of course you will see an influx of people pulling Charizard from these packs and posting to reddit. Same thing could have happened if someone started the rumor claiming that you have to buy boosters with the Charizard art.
by Weenington_