Your opponent runs out of Active This doesn't mean there aren't more Pokemon to place somewhere in their decks, mind you
Dragon Tempest
Below is a list of all the Rarities in Pokmon TCG from least rare to most rare: 1 Diamond 2 Diamonds 3 Diamonds 4 Diamonds 1 Star 2 Stars 3 Stars Gold Crown With the list above, it is quite obvious that the rarest cards in Pokmon TCG Pocket are those with a Gold Crown Rarity, but which cards fall under this specification
This booster box is the perfect middle-ground format if you want a major opening session without committing to a full case
Nelly Borca Ognis Upgrades: Mastermind Plum, Crime Novelist, Samut, Vizier of Naktamun, Song of Totentanz, Atalan Jackal, Professional Face-Breaker, Xorn, Jolene, the Plunder Queen, Korvold, Fae-Cursed King, Ingenious Artillerist, Mazirek, Kraul Death Priest, Hellkite Tyrant, Cavern-Hoard Dragon, Beast Within, Chaos Warp, Heroic Intervention, Great Train Heist, Seize the Spotlight, Revel in Riches, mana-fixing lands Rokiric Talrand Teysa Upgrades: Braids, Arisen Nightmare, Academy Manufactor, Mondrak, Glory Dominus, Ojer Taq, Deepest Foundation, Delney, Streetwise Lookout, Sanctum of Stone Fangs, The Meathook Massacre, Krark-Clan Ironworks, Smothering Tithe, Tarrian's Soulcleaver, Vito, Fanatic of Aclazotz, Ayara, First of Locthwain, Crypt Ghast, Priest of Forgotten Gods, Creeping Bloodsucker, Marionette Master

The question of whether Pokmon pull rates are getting worse is relevant context - One Piece has had similar community discussions about pack weighting, though the data is less extensively documented than Pokmon's