You can substitute this card for any 1 Fusion-Material Monster. When you do this, the other Fusion-Material Monster(s) must be the correct one(s). Tribute Fusion-Material Monsters on the field, including this card, to Special Summon 1 DARK Fusion Monster from your Fusion Deck.
![The Dark - Hex-Sealed Fusion [FET-EN028] Common](http://paradoxtcg.com/cdn/shop/products/ef656e7c-6b28-528d-bf89-d99e6a47555a.png?v=1698814660&width=1445)
