Shouldn't there be a SIR or Hyper Rare in a booster box?? : r PokemonTCG Magic The Gathering Deluxe Booster Box Four Knights Perfect Order ME03 Pokemon TCG Pull Rate. 20% chance of opening a secret rare (1MHR SIR or UR) 1 booster box generally gives you 78 Pokmon ex and around 4 Illustration Rares. One How Many Rares Mythics on average from ONE Play Booster Pack of Aetherdrift? Pokmon TCG: Scarlet & VioletJourney Together Product Showcase Pokemon.com