At minimum, verify the factory seal, plastic wrap texture, and box weight before purchasing sight-unseen
If done correctly, the bottom of the card will be where the sleeves opening is
Lower Text - Promo Info theme booster DRACONIC ROAR [EX-03] CLOSECLOSE EX3-074 SEC Digimon Lv.7 Examon Color Green Blue Form Mega Attribute Data Type Holy Warrior/Royal Knight DP 15000 Cost 15 Digivolve Cost 1 5 from Lv.6 Digivolve Cost 2 5 from Lv.6 Upper Text DNA Digivolution: 0 from green Lv.6 + blue Lv.6 [When Digivolving] You may place 1 green or blue Digimon card with [Dramon] in its name from your hand under this Digimon as its bottom digivolution card
For instance, learning the controls, learning where to go for the story, learning the weakness and strength system, learning that there even was such a system, figuring out that you can't use that card because the game said so until you duel your heart out against easy-to-beat opponents, learning how to navigate the duel interface when starting the game, and accidentally stumbling upon the fact that you can sort cards to make your life way easier
After beating the first league, which probably took me about an hour, I decided to stop playing for the day and go to sleep
