four emperors one piece booster box OP09 Case (EN) A Special Booster Pack to Commemorate the 2nd Anniversary One Piece Card Game: OP09:

Lower Text [Your Turn] [Once Per Turn] When another [Eosmon] is played, this Digimon may digivolve into [Eosmon] in your hand with the digivolution cost reduced by 3

You can only use this effect of "Carboneddon" once per turn

Only the latter effect has a hard once-per-turn clause, and it even grants this draw if it is used as a Synchro Material itself

7 Magma Vein There is more to red mana than fire and lightning

The other effect lets you unsuspend 1 of your Shoutmon EX6 and 1 of your ShootingStarmon, and you can attack with 1 of your Digimon

Instead of 24 packs with 6 cards each, a premium booster box contains 10 packs of 10 cards 100 cards total per box