![Mask of Weakness [LON-015] Common](http://rayscollectibles.myshopify.com/cdn/shop/products/22202_200w_{width}x.jpg?v=1613157953)
![Mask of Weakness [LON-015] Common](http://rayscollectibles.myshopify.com/cdn/shop/products/22202_200w_530x@2x.jpg?v=1613157953)
| Set: | Labyrinth of Nightmare |
| Card type: | Normal Trap |
| Rarity: | Common |
This card can only be activated in the Battle Phase. Select 1 attacking monster and decrease the selected monster's ATK by 700 points during the turn this card is activated.