The equipped monster gains 400 ATK. If the equipped monster attacks a Defense Position monster, inflict piercing battle damage to your opponent. When this card leaves the field, banish the equipped monster.
Rulings
Individual Card FAQs
When equipped to "Guardian Ceal", if you send "Big Bang Shot" to the Graveyard as a cost for "Guardian Ceal"'s effect, "Guardian Ceal" is removed from play but "Guardian Ceal"'s effect still resolves.
When the monster equipped with "Big Bang Shot" is destroyed, and "Big Bang Shot" is destroyed as a result of this, the equipped monster is not removed from play.
The effect of "Big Bang Shot" that removes the equipped monster from play can be resolved between steps of a chain. For example, if "Change of Heart" targets a monster equipped with "Big Bang Shot", and "Mystical Space Typhoon" is chained to "Change of Heart" to destroy "Big Bang Shot", first resolve "Mystical Space Typhoon" and destroy "Big Bang Shot", then remove the monster that was equipped from play, and THEN resolve "Change of Heart" (and the effect of "Change of Heart" disappears).
If a monster equipped with "Big Bang Shot" is flipped face-down, it is no longer a target of "Big Bang Shot" so "Big Bang Shot" is sent to the Graveyard and the monster is not removed from play.
When "Imperial Order" is active, and you destroy "Big Bang Shot" with "Dust Tornado", the effect of "Big Bang Shot" that would remove the monster from play is NOT applied.
When you send "Big Bang Shot" to the Graveyard with "Emergency Provisions", the monster is removed from play at the same time.
If a monster is equipped with "Big Bang Shot" and "Fiber Jar" is activated, both "Big Bang Shot" and the equipped monster are shuffled into the Deck, and the equipped monster is not removed from play even though "Big Bang Shot" was removed from the field.
If you equip your "Big Bang Shot" to your opponent's "Dark Magician", and "Dark Magician" attacks your "Giant Soldier of Stone", the opponent of the owner of the "Big Bang Shot" takes the damage (so your opponent, who attacked with "Dark Magician", takes 900 points of damage.)
The battle damage caused when the equipped monster attacks a Defense Position monster is considered to come from the equipped monster, not from "Big Bang Shot". So a "Don Zaloog" equipped with "Big Bang Shot" could still make the opponent discard 1 card when attacking a face-down monster with low DEF.
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Equip