YZ-Tank Dragon [MFC-054] Super Rare
1st Edition - LP
Not Buying
![Unknown Synchron [SDSE-EN008] Common](https://cdn.shopify.com/s/files/1/0836/1931/6002/products/bff6a6b3-0b38-50d3-aeaf-21f5a8f32d38.png?v=1699418727)
Unknown Synchron [SDSE-EN008] Common
| 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.