Cyberdark Impact! (SGX1-ENG15) - Speed Duel GX: Duel Academy Box 1st Edition

Fusion Summon 1 "Cyberdark Dragon" from your Extra Deck, by shuffling 1 each of "Cyberdark Horn", "Cyberdark Edge", and "Cyberdark Keel" from your hand, field, and/or GY, into the Deck, as Fusion Material.