The Act of War & Sky and Scale decks are now available for Duels of the Planeswalkers 2013. For $2.99 you get both decks.

From Wizards:

Act of War:  The horns sound. To war! With the red and white “Act of War” deck, your heroes will cut a path to the enemy’s door. If they stumble, cast tide-turning spells to light their way.

Sky and Scale: Hold your ground and rule the skies with this green and blue deck. “Sky and Scale” starts slow and steady but wins by summoning titanic flying creatures to end your foes’ hopes.

The deck pack is available for the game on all supported platforms (Xbox LIVE Arcade, PlayStation Network, Steam and iPad.) Starting on November 21st, you’ll be able to purchase the decks individually.