Just to briefly go over the cards:
Each pack came with two character cards, a location card, a specialty card (either a foil card or one of those pop-out cards), a tattoo sheet, and an episode card. In that order. For the pop-out cards, there are nine: the main six in their Gala dresses, and the CMCs in their Show Stoppers costumes. I’m not sure if any cards are specifically foil, or if it’s random.
Pack 1: Trixie, Scootaloo, Day Spa, FOIL Zecora, Tattoo sheet #9 (AJ, RD), It’s About Time
Pack 2: Rarity, Braeburn, Crusaders Clubhouse, Pop-Out Apple Bloom, Tatoo sheet #10 (TS, Luna), Fall Weather Friends (though the card says Dragonshy. Pfffft.)
Pack 3: Spike, Philomena, Golden Oaks Library, Pop-Out Sweetie Belle, Tattoo sheet #8 (TS cutie mark), Sonic Rainboom
Also, the back of the spa card mentions “a Lotus & Aloe Herbal Soak”. And the trivia card for Sonic Rainboom mentions Rarity’s fate as similar to that of Icarus. A nice touch. c: