24 packs per box, 20 Cards per pack (19 Game Cards, 1 Crafting Card, Loot Cards randomly inserted - replaces Hero)

War of the Elements is the second release in the Worldbreaker block.
War of the Elements picks up the Catclysm storyline where Worldbreaker left off. This time the focus is on the Elemental War that has been brought about by the return of Deathwing. Players can align themselves with one of the Elemental Lords that are playable allies for the first time. There will be 1 for each of the primary elements - Fire, Earth, Air, & Water. Blue & Bronze Dragonflights and their minions are a theme in this set. The Blue Dragonflight gets a Master Hero card for Kalecgos and the Bronze for Nozdormu. The set features the Stash mechanic, where players can gain an effect for using a non-quest card as a resource. Goblins and Worgen are plentiful, along with their respective abilities: Time Is Money and Aberration.

Cryptozoic has released the following information regarding the Loot cards:

Common Loot: "Lando's Lichling"
* When learned, counts towards all pet collection achievements.
* Is a super-common loot card.
* Useable at any level and therefore available for twinks.

Uncommon Loot: "War Party Hitching Post"
* Summons a hitching post that character, party, or raid members can use to summon horse mount.
* Mount automatically adjusts speed to your highest land riding skill.
* Mount lasts until any dismount.

Rare Loot: "Savage Raptor"
* You receive one epic item version when you redeem the code.
* Mount automatically adjusts speed to your highest land riding skill.
* When learned, the raptor mount counts toward the Mountain 'o Mounts achievement (Horde or Alliance).

This release is a 220 card set (80 Commons, 50 Uncommons, 20 Heroes, 60 Rares, 10 Epics)