Super Polymerization [SDSH-EN026] Common Astral Pack 1 Set: Sun & Moon: Base

Set: Sun & Moon: Base Set Type: Psychic Rarity: Ultra Rare Retreat cost: Colorless

Set: Sun & Moon: Unified Minds Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

or 1 card that specifically lists "Dark Fusion" in its text

Set: Secret Slayers Card type: Effect Monster Rarity: Super Rare Attack: 1200 Defense: 2600 You can Tribute 1 Plant monster

you can Tribute Summon this monster by Tributing 1 DARK monster

Super Polymerization [SDSH-EN026] Common Astral Pack 1 Set: Sun & Moon: BaseSet: Structure Deck: Shaddoll Showdown Card type: Quick Play Spell Rarity: Common Discard 1 card; Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from either field as Fusion Material. Neither player can activate cards or effects in response to this card's activation.