one piece booster box op06 (OP-06): Wings of the Captain Sleeved Pack from Germa 66 One Piece Japanese OP06: Wings

The one you bring to every trade night

Most importantly, Invasion of Gobakhan only has three defense counters, making it the easiest battle to defeat, which means flipping it shouldn't be much of an issue for the decks that want it

When a Digimon is played by this effect, trash your Digimon in the breeding area, and all your Digimon gain Rush for the turn

But it was a larger package that caught my eye

If preparations aren't complete by the mid-point of the game, you can use [BT17-097 Return to the Primogenitor] to quickly digivolve into a high-level Digimon

Being able to drop the cost of this creature by removing +1/+1 counters from your board is nice, and the inability to be chump-blocked makes it worth the investment