Unknown Synchron | Decks and Ruling

This page notes details of Unknown Synchron (DARK/Machine/Tuner monster/Effect Monster) : decks, tips, effect and rulings. Learn and enjoy playing Yu-Gi-Oh! Duel Links!
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update 16/06/2020

Unknown Synchron

Unknown Synchron
Monster TypeMachine
Card typeTuner / Effect
Card Effect TypeSummoning condition / Condition


If your opponent controls a monster and you control no monsters, you can Special Summon this card (from your hand). You can only Special Summon "Unknown Synchron" once per Duel this way.

How to Get

Level-up rewardYusei Fudo Lvl 30, 35, and 40 [UR]
Victory against--
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  • Can be special summoned from your hand.
  • Tuner.


  • Can only be special summoned when you control no monsters and your opponent controls a monster.


Machine Duplication

You can Special Summon Unknown Synchron from your hand and use Machine Duplication to summon 2 more Unknown Synchrons from your deck. You can then use those monsters as tribute for something big like an Egyptian God or Destiny HERO - Plasma.

Genex Neutron

Genex Neutron is able to search out Machine-type Tuners during the End Phase of the turn he was Normal Summoned. You can then use both Unknown Synchron and Genex Neutron the next turn to make a level-5 monster.

Synchro Material

Unknown Synchron Special Summoning condition requires that there be a monster on your opponent’s field. Use Synchro Material to use that monster with Unknown Synchron to make your Synchro monster.




Summoning categoriesSpecial Summons itself from your hand


This card needs more love.
Darklords can tech it to pull out a super easy Star Eater! That's totally meta, but people seem to forget this card exists altogether.
<< Anonymous(TK)
true. the combo can be really strong
Ah, just in time.
Time to bring all the synchro power creep to the game: Armades, Gianticastle and Azure Eyes already thought the basics to who were new to synchro summon ;)
finally a second one!! :)

Synchro will rise!!!
Come on Konami
One of the few good 5ds level 30 rewards. Seriously half of them are just Ur cards you can farm on the gate.
Konami pls
This card doesnt work at all, pls fix it
Banana Bocefus
How do you unlock this mf?
<< Anonymous(Banana Bocefus)
Anonymous Reply
>> card catalog
>> how to obtain

You are welcome mf
<< Anonymous(Banana Bocefus)
Anonymous Reply
It's Yusei Fudo Level 30 Reward..
<< Anonymous(Banana Bocefus)
Anonymous Reply
Use your brain bro...or your 🔥 something like that
<< Anonymous(Banana Bocefus)
Anonymous Reply
Yusei Fudo Lv 30
Konami please extends 5D's characters level-up rewards!
30 is not enough

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Comments (updated every hour)

the card doesn't work bro
Make Duel Links great again.
I think OP is just a troll. Every single deck has an answer to annoying spells/traps.
> Go to the latest comments

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