Masked HERO

Masked HERO is a Fusion-based HERO sub-archetype that generates its Extra Deck monsters not through Polymerization but exclusively through the Quick-Play Spell "Mask Change" and related cards. By sending a HERO monster on the field to the Graveyard, Mask Change Special Summons a Masked HERO Fusion from the Extra Deck that shares the sent monster's Attribute, giving the strategy enormous flexibility in choosing which threat to deploy at any given moment. The archetype's most impactful targets are Masked HERO Dark Law, whose continuous banishment effect shuts down GY-reliant strategies, and Masked HERO Anki, which applies pressure through direct attacks while searching additional "Change" spells to sustain momentum.

The engine is self-reinforcing. Masked HERO Dusk Crow can Special Summon itself from the hand by banishing a HERO from the GY, then searches any other Masked HERO on summon. Masked HERO Furnace fetches Mask Change or Polymerization directly from the Deck, while Masked HERO Fountain searches Mask Change by setting it when sent to the GY. Form Change and Mask Change II extend plays further by swapping an already-summoned Fusion for a different Masked HERO of the same or higher Level, effectively recycling a single Mask Change activation into a sequence of threats.

The deck leans slightly toward a going-first posture when deploying Dark Law, whose hand-banishing punishment taxes any opponent who searches during their own turn, though the suite of board-breaking Masked HEROes like Acid and Blast gives it meaningful going-second tools as well.