• Redemption - Special "Loot" versions of cards will have scratch offs that reveal codes to be redeemed in-game.
• Landro Longshot - The "Loot" version of Landro Longshot will grant a unique in-game tabard.   
• Thundering Hippogryph - A card that shows a Thundering Hippogryph will grant a new non combat pet.
• Saltwater Snapjaw - The loot version of "Saltwater Snapjaw" will grant players their very own big-eyed turtle mount. If you find this card, you can ride around on the back of a freaking turtle (Upper Deck is quick to point out that it goes regular speed, even though it's a turtle). Also, the mount is usable by players of all levels, which means you can finally ride out to Hogger.
• UDE Points - Every card pack will have a card that gives "UDE Points," which you can use to redeem for other cards or in-game items in an online system. Two trinkets are first up in this system: a trinket that puts on a fireworks display, and another that changes you into an ogre mage.
• Card series rewards - It's possible that there will be three loot rewards with every series of cards that Upper Deck releases-- the first series, Heroes of Azeroth, is due this month, and the second one, called Onyxia's Lair, is scheduled for November.

Via WoWInsider