Cannot be Normal Summoned/Set. Must be Special Summoned with "Assault Mode Activate". You can only use each of the following effects of "T.G. Halberd Cannon/Assault Mode" once per turn.
●When your opponent would Summon a monster (Quick Effect): You can negate the Summon, and if you do, banish that monster and all Special Summoned monsters your opponent controls.
●When this card on the field is destroyed: You can target 1 "T.G. Halberd Cannon" in your GY; Special Summon it, ignoring its Summoning conditions.