An amazing piece of artwork is used for a card that’s not useable in the Duel itself!
10 cards total, 2 cards per pack
Dark Flat Top
Mobius the Frost Monarch
Swords of Concealing Light
Aurkus, Lightsworn Druid
Gladiator Beast Retiari
Gravekeeper’s Priestess
A Feather of the Phoenix
Disturbance Strategy
Command Duel Specific Card*
Special Duel Checker **
*Command Duel are a type of dueling to be done on Yu-Gi-Oh! Day, where the store owner uses a random command duel card to tell people what to do
**
“When you use a card effect or need to count for a card effect, you can use this card to remind yourself!”
Source: http://blog.livedoor.jp/maxut/archives/33545392.html
The Source for the second picture comes to us from the vastness of the Japanese Twitter