Ally of Justice Core Destroyer | Decks and Ruling

This page notes details of Ally of Justice Core Destroyer (DARK/Machine/Effect Monster) : decks, tips, effect and rulings. Learn and enjoy playing Yu-Gi-Oh! Duel Links!
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update 21/07/2020

Ally of Justice Core Destroyer

Ally of Justice Core Destroyer
Monster TypeMachine
Card typeEffect
Card Effect TypeTrigger Effect
ArchetypesAlly of Justice


If this card attacks or is attacked by a LIGHT monster, destroy that monster at the start of the Damage Step (without damage calculation).

How to Get

Level-up reward--
Victory against--
Card trader--
OtherTag Duel Event [25 Nov - 3 Dec 2019] [UR]
Tag Duel Event [16 Jan - 27 Jan 2020] [UR]
Antinomy Roaming Event [UR]




  • Anti-LIGHT monster effect.


  • Weak stats.
  • Not useful against monsters that aren’t LIGHT attribute.


  • As the effect implies, this card is good against decks that are fully or mostly composed of LIGHT monsters. Some examples are Blue-Eyes, Silent Magician, Worm, Lightsworn, etc

DNA Transplant

Use DNA Transplant to turn all monsters on the field into LIGHT attributes. This will make them all vulnerable to Ally of Justice Core Destroyer’s effect.




Monster/Spell/Trap categoriesDestroys your opponent's Monster Cards


I could not get a 3rd copy no matter how many times times I did the lottery. Anyone else have this issue? I get every other UR card 8-9 times but no core destroyer
<< Anonymous
Anonymous Reply
Me too. But it's for pyrotech mech shiryu. I still don't get it from lottery and I already get this core destroyer about 7 times
<< Anonymous
Anonymous Reply
well. somehow i got 4
3 stars?
He looks like a small machine, yet he is the core destroyer, wow...
<< Anonymous(GIVE CATASTOR 2US)
Anonymous Reply
Funnily enough, we don’t
<< Anonymous(GIVE CATASTOR 2US)
Anonymous Reply
<< Anonymous
Anonymous Reply
The guy above reminds me of an anime called MD Gheist.
<< Anonymous(GIVE CATASTOR 2US)
Anonymous Reply
holy crap
can counter the meta decently and it's only a 3 star card
<< Anonymous
Anonymous Reply
Good against blue eyes and the silent cards
<< Anonymous
Anonymous Reply
Cosmo Brain is a dark monster that murders this with ease, and popping small silent magician to get out big one and thin out their deck more for easier searching in spellbooks is not such a good idea either.
<< Anonymous
Anonymous Reply
Honestly, the only “good” Ally of Justice cards against the meta rn would be Quarantine and Catastor- and of those 2 I don’t think we’re not gonna get Catastor for years
<< Anonymous
Anonymous Reply
Holy guard
You can just play this in desperado deck since it is a dark marchine. It is a great body on the field and counters some of the decks you might face.
<< Anonymous
Anonymous Reply
Yup, especially if you don't use Master of Destiny version
If its counterpart, Vampire Hunter comes, it will be possible to make a 20 card deck with 3x Vampire Hunter and 3x A-Genex Duradark.
Combine this card with DNA Transplant, this card gonna be the true meta
<< Anonymous
Anonymous Reply
So you need a 3rd card in your combo to protect Crusher? You're clearly a noob if you think that this might be a decent strategy.

I'll destroy your whole combo with a single Desperado, Enishi, Dragon Spirit of White or Ancient Gear Reactor Dragon. Because your combo is bad!
<< Anonymous
Anonymous Reply
Ok kaiba play ur meta deck and let other try things ,meta slave
<< Anonymous
Anonymous Reply
Who said anything about a second card? I said DNA Transplant is bad. Focus on the protection to keep Crusher on the field.
<< Anonymous
Anonymous Reply
If you're playing against AoJ your "Enishi and White Spirit" will meet craploads of card effects that prevent and negate their effects' activations.
Good against Blue-Eyes and Neos Deck.
Would be awesome if ally of justice was a great tier 0, like bringing justice against the 🔥.
<< Anonymous
Anonymous Reply
It would be fun 1 week
core destroyer and just 3 stars. Interesting, it might be the end of light monsters like NK or swordsman
Dna transplant buster blader works since it has a giant attack, negates monster effect, and can be summoned out via its own super poly. This just has a gimmicky battle effect and a tiny body.
<< Anonymous
Anonymous Reply
DNA Transplant changes Attribute, DNA Surgery changes Type. Buster Blader deck gets benefit from DNA Surgery, not DNA Transplant
good tech

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Comments (updated every hour)

is this deck really kog worthy?
duel links draw algorithm makes me brick harder than a @@@ing mason on a Friday
Counter Black Rose Dragon, Superheavy Samurai ogre shutendoji, Fortune Fairy monsters, Gladiator ...
He shall get Madolche support and skills. -Thank you for playing Duel Links.
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