Masked HERO Blast [JUMP-EN078] Ultra Rare Raging Battle Neither player can declare attacks

Neither player can declare attacks with face-up monsters with 1500 or more ATK

except this one

while this card is in your GY: You can target 1 Effect Monster your opponent controls

this card gains 3000 ATK during that damage calculation only

Set: Rarity Collection (25th Anniversary Edition) Card type: Fusion/Effect Monster Rarity: Quarter Century Secret Rare Attack: 2400 Defense: 1800 Must be Special Summoned with "Mask Change" and cannot be Special Summoned by other ways

Masked HERO Blast [JUMP-EN078] Ultra Rare Raging Battle Neither player can declare attacksSet: Shonen Jump Magazine Promos Card type: Fusion Effect Monster Rarity: Ultra Rare Attack: 2200 Defense: 1800 Must be Special Summoned with "Mask Change" and cannot be Special Summoned by other ways. If this card is Special Summoned: You can target 1 face up monster your opponent controls; its ATK becomes half its current ATK. Once per turn, during either player's turn: You can pay 500 LP, then target 1 Spell Trap Card your opponent controls; return