But you can change up your Deck from day to day, as long as you stick to using just those cards
Umbral Horror Ghoul X DARK Level 4 [ Fiend / Effect ] ATK 1800 DEF 0 Once per turn: You can make this card's ATK 0, and if you do, Special Summon 1 "Umbral Horror" monster with 0 ATK from your hand
(This Digimon may attack the turn it was played.) Promo Info theme booster DRACONIC ROAR [EX-03] CLOSECLOSE EX3-032 C Digimon Lv.5 Majiramon Color Yellow Form Ultimate Attribute Data Type Holy Dragon/Deva DP 7000 Cost 7 Digivolve Cost 1 3 from Lv.4 Digivolve Cost 2 - Upper Text [On Play] 1 of your opponent's Digimon gains Security Attack -2 (This Digimon checks 2 fewer security cards) until the end of your opponent's turn
However, each pack only costs 100 gems, so while you might not get the card you want, you'll still have plenty of choices to modify your deck with
Samsara, Dragon of Rebirth X DARK Level 5 [ Dragon / SynchroEffect ] ATK 100 DEF 2600 1 Tuner + 1 or more non-Tuner monsters If this card is destroyed by battle and sent to the Graveyard, or if this card you control is sent to your Graveyard by an opponent's card effect: You can target 1 monster in either player's Graveyard, except "Samsara, Dragon of Rebirth"
So, which collectors rares are worth keeping