yugioh 25th anniversary tin cards KONAMI Yu-Gi-Oh! Trading Card Game Dueling Heroes Booster MEGA Pack [18 Cards] : Toys & Games competitive decks YuGiOh Trading Card Game 25th

And from there, we know how many copies there are of each mythic, rare, uncommon and common from those packs

Creatures (16) Planeswalkers (8) Lands (25) Spells (11) While Archangel Avacyn has enjoyed relatively little success in powered formats, her sheer dominance during her entire Standard duration combined with just how many other Standard formats would be warped by her earn her spot on the list (and thats to say nothing of how complicated of a card she is, making her one of the most difficult to play optimally against)

Interestingly, card size matters a lot less in YuGiOh than in other trading card games

Pull rate from Rare Packs: 4.76% The estimated pull rate for Mega Altaria ex (Mega Rising) from a Rare Pack is approximately 4.76%, meaning you might need to open around 22 Rare Packs to obtain it