Mask of Weakness [BP02-EN174] Mosaic Rare Special Colorless Energy and have this card gain

and have this card gain ATK equal to the negated monster's ATK

Set: Power of the Duelist Card type: Effect Monster Rarity: Ultimate Rare Attack: 500 Defense: 500 This card gains 400 ATK for each Spell and Trap Card on your opponent''s side of the field

Set: Star Pack VRAINS Card type: Normal Trap Rarity: Starfoil Rare If you took damage by battle or an opponent's card effect this turn: Add 1 Level 4 or lower Cyberse monster from your Deck to your hand

Set: Speed Duel: Duelists of Tomorrow Card type: Normal Spell Rarity: Common Special Summon 2 "Lamb Tokens" (Beast-Type/EARTH/Level 1/ATK 0/DEF 0) in Defense Position

Set: 2015 Mega-Tins Mega Pack Card type: Continuous Spell Rarity: Rare If you control 2 or more "Raidraptor" monsters: You can add 1 "Raidraptor" monster from your Deck or Graveyard to your hand

Mask of Weakness [BP02-EN174] Mosaic Rare Special Colorless Energy and have this card gainSet: Battle Pack 2: War of the Giants Card type: Normal Trap Rarity: Mosaic Rare Target 1 attacking monster; that target loses 700 ATK until the End Phase.