View source for Card Rulings:Ally of Justice Catastor

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==TCG Rulings==
* The effect {{sic|or}} “[[Ally of Justice Catastor]]” activates at the very start of the Damage Step before face-down monsters are flipped face-up.<ref name="Konami-Tin-HA-SDWS-ST09">[http://www.yugioh-card.com/en/gameplay/rulings/100325DPTin_%20HA_SDWS_ST09_Rules.pdf Konami Gameplay FAQ]: Hidden Arsenal – Card Rulings (Version 1.0)</ref>

* If “[[Ally of Justice Catastor]]” or the opponent’s monster is face-down at the start of the Damage Step, the effect of “[[Ally of Justice Catastor]]” will not apply.<ref name="Konami-Tin-HA-SDWS-ST09"/>

* If “[[Ally of Justice Catastor]]” [[battle]]s a monster that can be treated as both DARK and another Attribute, such as “[[Dark Simorgh]],” the effect of “[[Ally of Justice Catastor]]” will activate and destroy the monster.<ref name="Konami-Tin-HA-SDWS-ST09"/>

* If “[[Ally of Justice Catastor]]” [[battle]]s a monster like “[[D.D. Warrior]]” the monster will be destroyed by the effect of “[[Ally of Justice Catastor]]’s” effect without damage calculation. The effect of “[[D.D. Warrior]]” that would activate after damage calculation will not activate.<ref name="Konami-Tin-HA-SDWS-ST09"/>

* If “[[Ally of Justice Catastor]]” [[battle]]s “[[Neo-Spacian Grand Mole]],” the mandatory effect of Catastor will activate first and become Chain Link 1 and the effect of “[[Neo-Spacian Grand Mole]]” will be Chained to it.<ref name="Konami-Tin-HA-SDWS-ST09"/>

* If the monster that “[[Ally of Justice Catastor]]” is battling survives the effect of Catastor because of “[[Heavy Mech Support Platform]]” or “[[Spirit of the Six Samurai]],” damage calculation will be carried out normally.<ref name="Konami-Tin-HA-SDWS-ST09"/>

===Mentions in Other Rulings===
*'''[[Card Rulings:Dark Simorgh|Dark Simorgh]]''': If "[[Ally of Justice Catastor]]" [[battle]]s "[[Dark Simorgh]]" it will destroy "[[Dark Simorgh]]" with its effect because "[[Dark Simorgh]]'s" [[Attribute]] is also treated as [[WIND]].

*'''[[Card Rulings:Gundari|Gundari]]''': If "[[Ally of Justice Catastor]]" [[battle]]s "[[Gundari]]" both of their effects activate and form a [[Chain]]. If "[[Ally of Justice Catastor]]" attacks "[[Gundari]]," both monsters are returned to the hand or [[Extra Deck]]. If "[[Gundari]]" attacks "[[Ally of Justice Catastor]]," then "[[Gundari]]" is destroyed and "[[Ally of Justice Catastor]]" returns to the [[Extra Deck]].

===Judge Program Forum Rulings===
{{RulingFlagged |TCGJudgeProgram =
* The effects of "[[Ally of Justice Catastor]]" and "[[Neo-Spacian Grand Mole]]" activate before a monster is flipped [[face-up]] on the [[damage step]].<ref name="AoJC-NSGM">[https://tcg.konami-europe.com/judgeforum/forum/viewtopic.php?f=6&t=168&sid=f3a7cd3f38ab3b050791574b6c98f7d1 Konami Judge Program Forum]: AoJ Catastor vs NS Grand Mole</ref>

* If "[[Ally of Justice Catastor]]" or "[[Neo-Spacian Grand Mole]]" is being attacked while [[face-down]], its effect will [[miss the timing]].<ref name="AoJC-NSGM"/>

* If "[[Ally of Justice Catastor]]" battles with  "[[Neo-Spacian Grand Mole]]" and both monsters are face-up, each effect activates at the same time. "[[Ally of Justice Catastor]]" is a [[Compulsory Effect|mandatory effect]], so it will be placed on the [[Chain]] first. "[[Neo-Spacian Grand Mole]]" is an [[Optional Monster Effect|optional effect]], and it will be placed on the Chain second.
** When the Chain resolves, the effect of "[[Neo-Spacian Grand Mole]]" will return "[[Neo-Spacian Grand Mole]]" to its owner's hand and "[[Ally of Justice Catastor]]" to its owner's [[Extra Deck]]. When "[[Ally of Justice Catastor]]" resolves, "[[Neo-Spacian Grand Mole]]" is no longer on the Field so it will not be destroyed.<ref name="AoJC-NSGM"/>
}}

==OCG Rulings==
===On Activating===
*"[[Ally of Justice Catastor]]"'s effect will activate when it [[battle]]s a monster with multiple [[Attribute]]s, such as "[[Dark Simorgh]]" or "[[Light and Darkness Dragon]]" - assuming that "[[Light and Darkness Dragon]]" doesn't negate the effect.<ref>[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=43624&event=FE0006 Konami FAQ]: When "Ally of Justice Catastor" battles, can it destroy a Monster with multiple Attributes including DARK?</ref>

*"[[Ally of Justice Catastor]]"'s effect activates at the beginning of the [[Damage Step]], before the monster is flipped face-up.  If the monster is face-down, "[[Ally of Justice Catastor]]"'s effect will not activate.<ref name="AOJC-FD">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=43661&event=FE0006 Konami FAQ]: Can a face-down monster be destroyed by "Ally of Justice Catastor"?</ref>

*If a monster attacks a face-down "[[Ally of Justice Catastor]]", the effect will not activate and the attacking monster will not be destroyed (regardless of its [[Attribute]]).<ref name="AOJC-FD"/>

===On Destroying the Monster Before Damage Calculation===
*When battling with "[[Ally of Justice Catastor]]", "[[D.D. Warrior]]"'s effect will not activate, since he is destroyed before [[Damage Calculation]] (and "[[D.D. Warrior]]"'s effect activates after [[Damage Calculation]]).<ref>[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=43639&event=FE0006 Konami FAQ]: When "Ally of Justice Catastor" and "D.D. Warrior" battle, can "D.D. Warrior" remove from play cards?</ref>

*If "[[Ally of Justice Catastor]]" [[battle]]s with a monster equipped with a card like "[[Heavy Mech Support Platform]]" or "[[Spirit of the Six Samurai]]", then "[[Heavy Mech Support Platform]]" is destroyed, but afterwards you still perform Damage Calculation because the equipped monster is still on the field.<ref>[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=50494&event=FE0006 Konami FAQ]: Do you still perform Damage Calculation if the opponent's monster cannot be destroyed by the effect of "Ally of Justice Catastor"?</ref>

===On [[SEGOC]]===
*If "[[Ally of Justice Catastor]]" [[battle]]s with "[[Neo-Spacian Grand Mole]]", the mandatory effect of "[[Ally of Justice Catastor]]" activates as Chain Link 1, and the optional effect of "[[Neo-Spacian Grand Mole]]" can activate as Chain Link 2.  "[[Neo-Spacian Grand Mole]]" will resolve first and return itself to the Hand and "[[Ally of Justice Catastor]]" to the [[Extra Deck]].  Then, the effect of "[[Ally of Justice Catastor]]" will resolve without effect.<ref>[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=46051&event=FE0006 Konami FAQ]: When "Ally of Justice Catastor" and "Neo-Spacian Grand Mole" battle, how do the effects resolve?</ref>

*If "[[Gundari]]" and "[[Ally of Justice Catastor]]" battle, then both effects [[activate]] at the beginning of the [[Damage Step]], so the two effects form a Chain and you resolve backwards.<ref name="Gundari-Catastor">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=52960&event=FE0006 Konami FAQ]: If "Gundari" and "Ally of Justice Catastor" battle, then what happens?</ref>
**If "[[Gundari]]" attacks a face-up "[[Ally of Justice Catastor]]", then the effect of "[[Gundari]]" activates as Chain Link 1 and the effect of "[[Ally of Justice Catastor]]" activates as Chain Link 2.  Resolving backwards, "[[Gundari]]" is destroyed, and then "[[Ally of Justice Catastor]]" is returned to the Extra Deck.<ref name="Gundari-Catastor"/>
**If "[[Ally of Justice Catastor]]" attacks a face-up "[[Gundari]]", then the effect of "[[Ally of Justice Catastor]]" activates as Chain Link 1 and the effect of "[[Gundari]]" activates as Chain Link 2.  Resolving backwards, "[[Gundari]]" is returned to the hand and "[[Ally of Justice Catastor]]" is returned to the Extra Deck.  Then, "[[Gundari]]" is no longer face-up on the field, so the effect of "[[Ally of Justice Catastor]]" is not applied.<ref name="Gundari-Catastor"/>

===Mentions in Other Rulings===
*'''[[Card Rulings:Ally of Justice Unlimiter|Ally of Justice Unlimiter]]''': When "[[Rush Recklessly]]" and "[[Ally of Justice Unlimiter]]" both affect "[[Ally of Justice Catastor]]",<ref name="AOJU-RR-AOJC">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=47553&event=FE0006 Konami FAQ]: When the effects of "Ally of Justice Unlimiter" and "Rush Recklessly" are applied, how does the monster's ATK change?</ref>
**If "[[Rush Recklessly]]" is activated first and then the effect of "[[Ally of Justice Unlimiter]]" is activated, then the ATK of "[[Ally of Justice Catastor]]" will be 4400 - its [[Original ATK]], doubled.<ref name="AOJU-RR-AOJC"/>
**If the effect of "[[Ally of Justice Unlimiter]]" is activated first and then "[[Rush Recklessly]]" is activated, then the ATK of "[[Ally of Justice Catastor]]" will be 5100.<ref name="AOJU-RR-AOJC"/>

*'''[[Card Rulings:Ally of Justice Unlimiter|Ally of Justice Unlimiter]]''':If "[[Ally of Justice Catastor]]" is equipped with "[[Megamorph]]" and has its ATK halved to 1100, when the effect of "[[Ally of Justice Unlimiter]]" is applied, then "[[Ally of Justice Catastor]]" will have 4400 ATK.  If "[[Ally of Justice Catastor]]" has its ATK doubled to 4400, then the effect of "[[Ally of Justice Unlimiter]]" will not change the ATK of "[[Ally of Justice Catastor]]".<ref name="AOJU-MM">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=47583&event=FE0006 Konami FAQ]: When the effect of "Ally of Justice Unlimiter" targets a monster which has been equipped with "Megamorph", what does its ATK become?</ref>

*'''[[Card Rulings:Ally of Justice Unlimiter|Ally of Justice Unlimiter]]''':If "[[Ally of Justice Catastor]]" is affected by "[[Ally of Justice Unlimiter]]" and then is equipped with "[[Megamorph]]", then "[[Ally of Justice Catastor]]" will have 1100 ATK or 4400 ATK, as determined by "[[Megamorph]]".<ref name="AOJU-MM"/>

*'''[[Card Rulings:Gladiator Beast|Gladiator Beast]]''': If "[[Gladiator Beast Alexander]]" attacks "[[Krebons]]" or "[[Ally of Justice Catastor]]" and its effect activates, then if "[[Gladiator Beast War Chariot]]" negates the activation of the effect destroys it, then [[damage calculation]] is not performed.  Thus, at the end of the [[Battle Phase]] you cannot activate the effect of "[[Gladiator Beast Alexander]]" which Special Summons another "[[Gladiator Beast]]" monster from the Deck.<ref name="GBChariot-Battle">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=51724&event=FE0006 Konami FAQ]: Can the effect of a monster like "Gladiator Beast Alexander" be activated if the opponent's battling monster is destroyed when "Gladiator Beast War Chariot" is activated during the Damage Step?</ref>

*'''[[Card Rulings:Stardust Dragon|Stardust Dragon]]''': The effect of "[[Stardust Dragon]]" which negates the activation of an effect which destroys can also be activated during the [[Damage Step]].<ref name="DS-Stardust">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=54687&event=FE0006 Konami FAQ]: <nowiki>[Damage Step]</nowiki> Can the effect of "Stardust Dragon" negate the effect of "Ally of Justice Catastor"?</ref>
**Example: If the effect of "[[Ally of Justice Catastor]]" [[activate]]s during the Damage Step, then the effect of "[[Stardust Dragon]]" may be [[Chain]]ed to negate the activation of "[[Ally of Justice Catastor]]"'s effect and destroy it<ref name="DS-Stardust"/><ref name="Stardust-Catastor">[http://yugioh.faq.konami.jp/EokpControl?&lang=en&tid=56544&event=FE0006 Konami FAQ]: Can you use the effect of "Stardust Dragon" to negate the effect of "Ally of Justice Catastor" and destroy it?</ref>, even if that "[[Stardust Dragon]]" is the monster battling "[[Ally of Justice Catastor]]".<ref name="Stardust-Catastor"/>

==Notes==
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==References==
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