2 "Masked HERO" monsters (This card is always treated as an "Elemental HERO" card.)
Must be Fusion Summoned and cannot be Special Summoned by other ways. While face-up on the field, this card is also LIGHT-Attribute. Once per turn, during either player's turn: You can target 1 face-up card on the field; negate that target's effects until the end of this turn.
Very likely, considering the translation for Kamen Rider is basically "Masked Rider". So it's not too far of a stretch that they would take some inspiration for the HERO fusion monsters with mask change.
Everyone said that masked hero needs main deck monster to make easier summon this card. I agree. But I think it should be high-level and while face-up on the field, it's treated as masked hero monster to balance the card. Because that's what Konami probably would do.