Fusion Reserve

Yu-Gi-Oh Card: Fusion Reserve
Available from these partners:
Fusion Reserve
Type:Normal Trap
Text:Reveal 1 Fusion Monster from your Extra Deck, add 1 of the Fusion Materials listed on that card from your Deck to your hand, then you can add 1 "Polymerization" from your Graveyard to your hand.
Printings: 2015 Mega-Tin Mega Pack (MP15-EN185)
Fusion Enforcers (FUEN-EN060)
Legendary Decks II: Kaiba's Deck (LDK2-ENK37)
The New Challengers (NECH-EN078)