yugioh mystery graded card LIMITED Yu-Gi-Oh! Yu-Gi-Oh! 'Yu-Gi-Crates' – UK Blue

I am not getting why this card would work most of the time

Lower Text - Promo Info Tamer Battle Pack 2 CLOSECLOSE ST2-08 R Digimon Lv.5 Parallel Rare WereGarurumon Color Blue Form Ultimate Attribute Vaccine Type Beastkin DP 7000 Cost 7 Digivolve Cost 1 3 from Lv.4 Digivolve Cost 2 - Upper Text - Lower Text [Your Turn] As long as your opponent has a Digimon with no digivolution cards, this Digimon gets Security Attack +1 (This Digimon checks 1 extra security card.)

There are multiple rarities for cards, with UR taking up the best of the best cards

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