YZ-Tank Dragon [MFC-054] Super Rare
1st Edition - LP
Not Buying
![Theban Nightmare [AST-063] Rare](https://cdn.shopify.com/s/files/1/0836/1931/6002/products/24a32b35-b8a8-5971-8dc4-91a142311d01.png?v=1699415536)
Theban Nightmare [AST-063] Rare
| Set: | Ancient Sanctuary |
| Card type: | Effect Monster |
| Rarity: | Rare |
| Attack: | 1500 |
| Defense: | 500 |
While there are no cards in hand and in the Spell & Trap Card Zone of this card's controller, increase the ATK of this card by 1500 points.