There are 249 black-bordered cards in Zendikar. (15 Mythic Rare, 53 rare, 60 uncommon, 101 common, 20 basic lands).
Each Fat Pack box contains eight boosters, a card box, a player's guide, a 'Learn To Play' insert, a land pack, and an excerpt from 'Path of the Planeswalker.'
Look for the following key cards:
Chandra Ablaze \t
Eldrazi Monument \t
Eternity Vessel \t
Felidar Sovereign \t
Iona, Shield of Emeria \t
Kalitas, Bloodchief of Ghet \t
Lorthos, the Tidemaker
Lotus Cobra \t
Mindbreak Trap
Nissa Revane \t
Ob Nixilis, the Fallen \t
Obsidian Fireheart \t
Rampaging Baloths \t
Sorin Markov \t
Warren Instigator
Arid Mesa
Bloodghast
Misty Rainforest
Scalding Tarn\t
