30 Marvel's Spiderman Play Boosters.

Each Play Booster contains:
14 Magic: The Gathering cards
Play Boosters may contain these cards: SPM 1–231; MAR 1–40
Includes 1–4 cards of rarity Rare or higher (2: 31%; 3: 3%; 4: <1%), and 3–5 Uncommon, 6–9 Common, and 1 Land cards
1 card of any rarity is Traditional Foil
Foil Showcase Mythic Rare in <1% of boosters
Traditional Foil Land replaces a Land in 20% of boosters