| Set: |
Structure Deck: Synchron Extreme |
| Card type: |
Tuner/Effect Monster |
| Rarity: |
Common |
| Attack: |
0 |
| Defense: |
0 |
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.
![Unknown Synchron [SDSE-EN008] Common](http://cardcastergames.com/cdn/shop/files/bff6a6b3-0b38-50d3-aeaf-21f5a8f32d38_800x.png?v=1718587152)
![Unknown Synchron [SDSE-EN008] Common](http://cardcastergames.com/cdn/shop/files/bff6a6b3-0b38-50d3-aeaf-21f5a8f32d38_1024x.png?v=1718587152)
