The Mad Prince Pack is a special offer available for USD $4.99/€4.99, released on December 14, 2016 to coincide with the Chaos Arena. It contains five Core Set card packs and exclusive alternate art for Hive Defender, Sharpshooter Scout, and Crushing Blow. You will receive three copies of these alternate cards, which cannot be crafted or deconstructed. They are premium cards, and are treated the same as the regular versions in terms of deckbuilding limits.