Pyroxene Fusion (HA06-EN028) - Hidden Arsenal 6: Omega Xyz 1st Edition

Send, from your hand or your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a "Gem-Knight" Fusion Monster Card, then Special Summon that Fusion Monster from the Extra Deck. (This Special Summon is treated as a Fusion Summon.)