The pack voted on by player’s choice.

Buy a box of Ignition Assault in Japan, get 1 “Hitting 10000 Different Cards Commemorative Special Pack” (1 card per Pack). All cards are either Secret Rare or 20th Secret Rare.

Mirror Force
Reinforcement of the Army
Black Luster Soldier
Cyber Dragon
Super Polymerization
Stardust Dragon
Galaxy-Eyes Photon Dragon
Cyber Dragon Nova
Supreme King Z-ARC
Sky Striker Ace – Shizuku

Source