Attack on Titan Union Arena Vol 2 [EX10BT] - BoxATTACK ON TITAN UNION ARENA VOL 2 [EX10BT] BOX 1 box contains 16 boosters 1 booster contains 8 cards The second booster pack of UNION ARENA's Attack on Titan is now available! The lineup features popular characters from the TV anime Attack on Titan The Final Season. A new color, yellow, is also available! Includes autograph cards featuring cast members from the TV anime series! Includes a foil stamped autograph card with the signatures of the voice