X Special Series 4: X Duel Chest

"Buddy Rare Confirm!! Thunder Empire VS Chaos 20 Pack " is the 4th X Special Series released in the Japanese format.

Features

 * Each set contains 30 packs. You can make 2 different decks with these pack.
 * There are total 50 cards, 48 new cards, and 2 flag cards.
 * Includes 2 BR and 18 R.
 * Includes further support for 《Thunder Empire》 and 《Chaos》.
 * Includes a Rulebook, two Life Counters, and two Playmats.

Card List
Confirmed Cards:
 * Dragon Fang Thunder Emperor
 * the Chaos