Masked HERO Blast [JUMP-EN078] Ultra Rare SM175 Set: Box Topper Type: Fire

Set: Box Topper Type: Fire Rarity: Promo Retreat cost: Colorless

look at your opponent''s hand

Halve the ATK and DEF of all monsters on the field

except by removing from play 1 "Stardust Dragon" from your Extra Deck

or the effects of cards

Masked HERO Blast [JUMP-EN078] Ultra Rare SM175 Set: Box Topper Type: FireSet: 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