yugioh mystery graded card LIMITED Yu-Gi-Oh! Yu-Gi-Oh! Mystery Gems Hanger Box

When a creature put onto the battlefield with this scheme dies, abandon this scheme

Decks with "Symphonic Warrior Guitariss" * is adopted as a key card

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.)

Contains: 100-card ready-to-play Commander deck