Send Fusion Material Monster that are listed by a Fusion Monster Card, from your hand or your side of the field to the Graveyard, and Special Summon 1 "Gem-Knight" Fusion Monster from the Extra Deck. (This Special Summon is treated as a Fusion Summon.) If this card is in the Graveyard, you can remove from play 1 "Gem-Knight" monster from your Graveyard to add this card to your hand.