"Chronomaly", known as "OOPArts" (先史遺産(オーパーツ) Ōpātsu or 오파츠 Opacheu, Dị Niên Thể) in Japan or Korea, is an archetype of cards used by Trey in the Yu-Gi-Oh! ZEXAL anime. Most are either EARTH or LIGHT, as well as either Machine or Rock.

Their effects support each other well, enabling quick swarming and Xyz Summons of Rank 5 Xyz Monsters, particularly through the LIGHT monsters.



Most "Chronomaly" monsters are based on and resemble various artifacts.


Tên OCG, "OOPArts", là từ viết tắt của "Out-Of-Place Artifact", thuật ngữ để mô tả các cổ vật được tạo nên một cách khó hiểu của nền khoa học lúc bấy giờ. Đây cũng có phần nào đặc trưng của loạt "Ancient Treasure" trong anime Yu-Gi-Oh! 5Ds. Tên TCG,"Chronomaly", là một từ ghép của từ "chronology" đó là thứ tự các sự kiện trong quá khứ xảy ra và "anomaly" như là sự bất thường hoặc một cái gì đó kỳ lạ . Đặt chúng lại với nhau đó là "chronological anomalies" hay "chronomalies" kể từ khi các đối tượng này đi chệch khỏi những gì có thể đã được tạo ra từ các nguồn lực và công nghệ có sẵn tại thời điểm đó.


Main Deck

Level Chronomaly Origin
3 Crystal Bones Actun Tunichil Muknal
Crystal Skull Crystal skull
Gordian Knot Gordian Knot
Mayan Machine K'inich Janaab' Pakal
4 Aztec Mask Golem Teotihuacan
Cabrera Trebuchet Ica Stones
Colossal Head Olmec colossal heads
Golden Jet Quimbaya Airplane Artifact
Mud Golem Dogū
Nebra Disk Nebra sky disk
5 Moai Moai
Moai Carrier
Tula Guardian Tula
Winged Sphinx Great Sphinx of Giza
6 Sol Monolith Aztec calendar stone

Extra Deck

Rank Chronomaly Origin
3 Crystal Chrononaut Ancient astronauts
4 Chateau Huyuk Çatalhöyük
5 Machu Mech Machu Picchu
6 Atlandis Atlantis + Atlas
7 Chaos Atlandis


Card Origin
Antikythira Gear Antikythera mechanism
Chronomaly City Babylon Babylon
Chronomaly Ley Line Power Ley line
Chronomaly Pyramid Eye Tablet Emerald Tablet
Chronomaly Technology Ancient technology
Orichalcum Chain Orichalcum
Orichalcum Mirage
Palenque Sarcophagus Palenque
Stone Bola Costa Rica Stone Spheres
Stonehenge Methods Stonehenge
Stonehenge Shield
Sunken Kingdom Atlantis
Thunder Pot Baghdad Battery

Playing style

"Chronomaly" monsters are focused on Xyz Summoning a wide range of Xyz Monsters. Many of their effects allow Special Summoning of more "Chronomaly" monsters.

Recommended cards

Chronomaly OTK

This Deck focuses on using the effects of "Number 33: Chronomaly Machu Mech" and "Number 36: Chronomaly Chateau Huyuk" to perform a One Turn Kill.

What you need:

  • Four monsters in your field (two needs to be Level 5 and the others Level 4)
  • "Number 33: Chronomaly Machu Mech" and "Number 36: Chronomaly Chateau Huyuk" in the Extra Deck
  • Your opponent has a monster with 1800 or more ATK

How it works:

  • The four monsters you need are: two Level 5 to Summon "Chronomaly Machu Mech" and another two Level 4 to Summon "Chronomaly Chateau Huyuk":
  • Xyz Summon "Chronomaly Machu Mech" using the two Level 5 monsters and "Chronomaly Chateau Huyuk" using the two Level 4 monsters.
  • Activate the effect of "Chronomaly Chateau Huyuk", target 1 of your opponent's monsters with at least 1800 ATK. The targeted monster's ATK becomes 0.
    • All following calculations will be done with the assumption that that monster had exactly 1800 ATK.
  • Use the effect of "Chronomaly Machu Mech" on the monster that was targeted by the effect of "Chronomaly Chateau Huyuk" to inflict 1800 effect damage to your opponent. Then "Chronomaly Machu Mech" gains ATK equal to the amount of damage inflicted. This makes its total ATK 4200.
  • Enter the Battle Phase and attack your opponent's monster that was targeted by "Chronomaly Chateau Huyuk", then attack directly dealing a total of 6000 damage.

1800 (the first effect of "Chronomaly Machu Mech") + 4200 (the ATK of "Chronomaly Machu Mech") + 2000 (the ATK of "Chronomaly Chateau Huyuk") = 8000 damage


Recommended cards

Official Decks

From Let's built a Chronomaly Deck (June 13, 2012)

Chronomaly Deck (Type A)
先史遺産デッキ (Type A)
Chronomaly Deck (Type B)
先史遺産デッキ (Type B)
Cyber Chronomaly[1]
Cyber Chronomaly Side Deck[2]


Since most "Chronomaly" cards involve swarming, mass-removal cards like "Dark Hole", "Torrential Tribute" and "Deck Devastation Virus" can interdict "Chronomaly" monsters before they have a chance to infest the field with the latter-most aforementioned card perhaps being the deadliest to this Deck due to the card's lingering effect and all the non-Xyz "Chronomaly" monsters (except "Winged Sphinx") sporting 1500 or less ATK. "Light-Imprisoning Mirror" also poses a threat to their swarming and effects, as most "Chronomaly" monsters have LIGHT as their Attribute. However, "Mind Drain" can be worse in countering their Special Summoning as a lot of key Level 5 "Chronomaly" monsters (i.e. "Moai" and "Moai Carrier") are helpful in Xyz Summoning "Machu Mech".

In addition, cards like "Summon Limit", "Narrow Pass" and any cards that render Monster Card Zones useless (i.e. "Ground Collapse") can bar them from the field completely ("Summon Breaker" can also flat-out pause a spamming "Chronomaly" player's turn completely). In fact, these countermeasures, combined with anti-Special Summoning support, can almost completely shut down "Chronomaly" Decks. Finally, most "Chronomaly" monsters have scanty DEF—if "Chronomaly" Duelists go on the defensive, Defense Position-destroying card effects and piercing cards can be added boon against "Chronomaly" Decks. If you want to go on the defensive use "Giant Soldier of Steel" in your Extra Deck against burns and monsters with 1900 or more ATK.


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