OCG Rulings

  • "This card cannot be Special Summoned except by Synchro Summon." is not treated as an effect.[1]
  • The effect of negating the Summon of a monster is a Quick Effect, and can be activated during either player's turn.[1]
  • The effect of Special summoning a T.G. monster can be activated during the Damage Step.[1]


  1. 1.0 1.1 1.2 1.3 1.4 Konami OCG FAQ: Synchro Monster > T.G. Halberd Cannon
  2. Konami OCG FAQ: What type of monster summon that T.G Halberd Cannon can negate?

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