Mask of Weakness [DTP1-EN017] Common Duelist Pack Collection Tin then if this card was

then if this card was Set before activation and is on the field at resolution

this card's ATK becomes 5000 during that damage calculation only

Negate the activation of a Spell Card and destroy it

you can Tribute this face-up monster to destroy all face-up Attack Position monsters your opponent controls and inflict damage to your opponent equal to the combined original ATK of those destroyed monster(s)

Mask of Weakness [DTP1-EN017] Common Duelist Pack Collection Tin then if this card wasSet: Duel Terminal Preview Card type: Normal Trap Rarity: Common Target 1 attacking monster; that target loses 700 ATK until the End Phase.