Card Rulings:Barrel Behind the Door


 * "Barrel Behind the Door" can only be activated against an effect that inflicts damage to YOUR Life Points.


 * "Barrel Behind the Door" can only be activated against DAMAGE. It cannot be activated against costs like "Imperial Order" or "Wall of Revealing Light". It cannot be activated against effects that cause you to lose Life Points like "The Immortal of Thunder". It cannot be activated against effects that switch damage, like another "Barrel Behind the Door", because they do not inflict damage, they simply transfer it.


 * You cannot activate "Barrel Behind the Door" against a Continuous Spell or Trap Card, an Equip Spell Card, or a Field Spell Card. So you cannot activate it against "Magical Thorn", "Dark Snake Syndrome", "Wave-Motion Cannon", or "Black Pendant".


 * You cannot activate "Barrel Behind the Door" against a Continuous Effect Monster like "Gravekeeper's Vassal" or "Fire Princess" (even if an effect like "Gift of the Mystical Elf" is activated while "Fire Princess" is on the field).


 * You can activate "Barrel Behind the Door" against Normal and Quick-Play Spell and Trap Cards, such as "Tremendous Fire" or "Attack and Receive".


 * You can activate "Barrel Behind the Door" against Trigger Effects like "Lava Golem", "Giant Germ", "Relinquished" (when it inflicts effect damage, since "Barrel Behind the Door" can be activated during the Damage Step because it is a Counter Trap Card), "Minar" (when discarded), "Parasite Paracide" (when it inflicts effect damage), "Bowganian", "Mushroom Man #2", "Reflect Bounder" (when it is attacked), "Shinato, King of a Higher Plane" (when it attacks and destroys a Defense Position monster and sends it to the Graveyard), "Granadora" (when destroyed and sent to the Graveyard), "Balloon Lizard" (when destroyed), "KA-2 Des Scissors", "Needle Burrower", "Atomic Firefly", "Elephant Statue of Disaster", and "Ameba".


 * You can activate "Barrel Behind the Door" against Ignition Effects like "Cannon Soldier", "Catapult Turtle", "The Agent of Judgment - Saturn", and "Chaos Emperor Dragon - Envoy of the End".


 * You can activate "Barrel Behind the Door" against Flip Effects like "Princess of Tsurugi", "Fire Sorcerer", "Needle Ball", "Des Koala", and "Lady Assailant of Flames".


 * You can activate "Barrel Behind the Door" against "Jigen Bakudan". You don't activate "Barrel Behind the Door" when the Flip Effect activates, you activate "Barrel Behind the Door" when "Jigen Bakudan" activates its effect during the next Standby Phase to inflict damage.


 * "Barrel Behind the Door" cannot be activated against cards that do not inflict damage when the card resolves, such as "Graverobber", which inflicts damage later.


 * You can activate "Barrel Behind the Door" against "Ring of Destruction", and then your opponent will take all of the damage (the damage inflicted to him and the damage that would have been inflicted to you). The same is true for "Tremendous Fire".


 * You can activate "Barrel Behind the Door" against "Magic Cylinder". The attack will be negated and the damage transferred to the opponent.


 * You cannot activate "Barrel Behind the Door" against effects if you don’t know for certain that they will inflict damage when the effect is activated. So you cannot activate it against "Dice Jar", "Judgment of Anubis", "Time Wizard" or "Ante". Your cannot activate "Barrel Behind the Door" against "Ceasefire" if all monsters on the field are face-down, or if all monsters on the field are face-up Normal Monsters, but you can activate it against "Ceasefire" if there is at least 1 face-up Effect Monster on the field.


 * You can activate "Barrel Behind the Door" during the Damage Step against appropriate effects, such as "Princess of Tsurugi", because it is a Counter Trap.


 * Remember that the effects that Counter Traps are chained to must immediately precede them in the chain. So if you activate "Ring of Destruction", and intend to chain "Barrel Behind the Door" to it, if your opponent chains something in-between (even an unrelated effect like "Jar of Greed"), then you cannot chain "Barrel Behind the Door" because "Ring of Destruction" is no longer the preceding step in the chain.


 * If one player’s "Giant Germ" attacks another "Giant Germ" so that both effects activating during the Damage Step, they form a chain. If both players control "Barrel Behind the Door, only 1 player can chain theirs. The turn player will be able to chain "Barrel Behind the Door" to the opponent's "Giant Germ" because it is Step 2 of the chain.


 * If "Bad Reaction to Simochi" is active, you can activate "Barrel Behind the Door" against effects that would normally cause a Life Point increase, because they inflict damage instead.


 * If you re-direct damage to your opponent using "Barrel Behind the Door", and you have "Dark Room of Nightmare" on the field, then "Dark Room of Nightmare" inflicts 300 more damage.


 * For effects like "Princess of Tsurugi" "Thunder Crash", and "Restructer Revolution", where damage is added up, "Barrel Behind the Door" re-directs the entire sum of damage.

Mentions in Other Rulings

 * Abare Ushioni: You cannot chain "Barrel Behind the Door" to the effect of "Abare Ushioni" because you don't know yet if you will take damage or not from the effect.


 * Amazoness Swords Woman: Damage inflicted to the opponent when "Amazoness Swordswoman"'s effect is activated is Battle Damage, so the opponent cannot use "Barrel Behind the Door".


 * Ancient Gear Cannon: The restriction on Trap Cards is tied to "Ancient Gear Cannon" inflicting damage. If "Barrel Behind the Door" is chained to the effect of "Ancient Gear Cannon", the rest of "Ancient Gear Cannon"'s effect is not applied and Trap Cards can still be activated.


 * Ante: You cannot chain "Barrel Behind the Door" to "Ante" because you don't know for certain whether you will take damage.


 * Atomic Firefly: You can use "Barrel Behind the Door" against "Atomic Firefly"'s effect.


 * Balloon Lizard: You can use "Barrel Behind the Door" against "Balloon Lizard"'s effect.


 * Bowganian: You can use "Barrel Behind the Door" against "Bowganian"'s effect.


 * Chaos Emperor Dragon - Envoy of the End: "Barrel Behind the Door" and "Trap of Board Eraser" can be chained to "Chaos Emperor Dragon - Envoy of the End"'s effect. "Barrel Behind the Door" is, itself, sent to the Graveyard by "Chaos Emperor Dragon - Envoy of the End"'s effect and counts for an additional 300 points as a result.


 * Chthonian Blast: You can chain "Barrel Behind the Door" to "Chthonian Blast".


 * Cyclone Boomerang: When a monster equipped with "Cyclone Boomerang" is destroyed by a card effect, its effect starts a chain. "Barrel Behind the Door" can be activated in response.


 * Des Koala: You can chain "Barrel Behind the Door" to "Des Koala"'s Flip Effect.


 * Destiny Hero - Diamond Dude: Since the Spell Card itself is not activated (only its effect is), your opponent cannot chain "Magic Jammer", "Dark Deal", "Barrel Behind the Door" or any other card that has to be chained to the activation of a Spell Card.


 * Dora of Fate: You cannot use "Barrel Behind the Door" against "Dora of Fate".


 * Elephant Statue of Disaster: You can use "Barrel Behind the Door" against the effect of "Elephant Statue of Disaster".


 * Falling Down: You cannot use "Barrel Behind the Door" against the damage from "Falling Down" because you cannot use "Barrel Behind the Door" against a Continuous or Equip Spell Card.


 * Giant Kozaky: You can chain "Barrel Behind the Door" to the Trigger Effect (the damage) of "Giant Kozaky".


 * Goblin Thief: You can chain "Barrel Behind the Door" to "Goblin Thief".


 * Granadora: When your "Granadora" is destroyed and sent to the Graveyard, you can activate "Barrel Behind the Door" against the damage.


 * Grand Convergence: "Barrel Behind the Door" can be chained to this card.


 * Gravekeeper's Vassal: You cannot activate "Barrel Behind the Door" against damage inflicted by "Gravekeeper's Vassal" because its effect is a Continuous Effect and you cannot activate "Barrel Behind the Door" against Continuous Effects.


 * Judgment of Anubis: You cannot activate "Barrel Behind the Door" against "Judgment of Anubis" because when "Judgment of Anubis" is activated, it has not been confirmed that the damage-inflicting effect will happen.


 * KA-2 Des Scissors: You can use "Barrel Behind the Door" against "KA-2 Des Scissors"' effect.


 * Mecha-Dog Marron: You can use "Barrel Behind the Door" against either effect of "Mecha-Dog Marron".


 * Needle Burrower: You can use "Barrel Behind the Door" against "Needle Burrower"'s effect.


 * Oxygeddon: This card's effect is a Trigger Effect. It can be chained to with "Barrel Behind the Door".


 * Poison Fangs: You cannot activate "Barrel Behind the Door" against the damage caused by "Poison Fangs", since it is a Continuous Spell Card.


 * Power Bond: You cannot use "Barrel Behind the Door" against the damage from "Power Bond" because the damage happens much later than the activation of the "Power Bond" card.


 * Reflect Bounder: When your opponent attacks your Attack Position "Reflect Bounder", your opponent can use "Barrel Behind the Door" against "Reflect Bounder"'s effect.


 * Shinato, King of a Higher Plane: When "Shinato, King of a Higher Plane" destroys a Defense Position monster, your opponent can activate "Barrel Behind the Door" as a chain to "Shinato, King of a Higher Plane"'s effect.


 * Solar Flare Dragon: You can apply "Barrel Behind the Door" to the effect of "Solar Flare Dragon".


 * The Agent of Judgment - Saturn: You can chain "Barrel Behind the Door" to "The Agent of Judgment - Saturn"'s effect.


 * Trap of Board Eraser: For other rulings, see "Barrel Behind the Door".


 * Winged Kuriboh LV10: The Multi-Trigger Effect of "Winged Kuriboh LV10" can be chained to. You can chain "Barrel Behind the Door" or "My Body as a Shield" to the effect.