TCG Rulings

  • Activating more than 1 of this card targeting the same monster has no extra effect. Its DEF will still just be double its original DEF.[1]
  • The monster’s DEF remains at double its original value as long as the monster remains face-up on the field.[1]

OCG Rulings

  • If you activate multiple copies of this card on the same monster, then the monster's DEF will just be double its Original DEF.[2]


  1. 1.0 1.1 1.2 Konami Gameplay FAQ: Starstrike Blast Sneak Peek -- Card Rulings (Version 1.0)
  2. 2.0 2.1 Konami OCG FAQ: Can you activate "D2 Shield" during the Damage Step?

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