Unknown Synchron
Tuner Effect Monster

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.
About the card
Unknown Synchron is a DARK Machine Tuner Effect Monster, Level 1, with 0 ATK and 0 DEF.
It belongs to the Synchron archetype.
It is unrestricted on the TCG Forbidden & Limited List: a deck can run up to 3 copies.
It came out in the TCG in 2011 and has been printed in 4 sets, from the first (Extreme Victory) to the latest (Legendary Duelists: Synchro Storm).
Sets it was printed in
- Legendary Duelists: Synchro Storm 2021C Common
- Synchron Extreme Structure Deck 2015C Common
- Legendary Collection 5D's Mega Pack 2014ScR Secret Rare
- Extreme Victory 2011C Common
More Synchron cards
Card data and images provided by YGOPRODeck.











