Contents:
36 Modern Horizons 3 Play Boosters
14 Magic: The Gathering cards
1-5 cards of rarity Rare of higher 
3-6 Uncommon cards 
5-9 Common cards 
0-1 Land card (Traditional Foil Land replaces a Land in 20% of boosters) 
1 card of any rarity is Traditional Foil; Borderless Fetch Land in <1% of boosters