[SCD New] Brilliant Fusion

When this card is activated: Send, from your Deck to the Graveyard, Fusion Material Monsters that are listed on a “Gem-Knight” Fusion Monster in your Extra Deck, then Fusion Summon that “Gem-Knight” Fusion Monster from your Extra Deck, but its ATK and DEF each become 0. Destroy that monster if this card leaves the field.
Once per turn: You can discard 1 Spell Card; that Fusion Summoned monster gains ATK and DEF equal to its original ATK and DEF, until the end of your opponent’s turn.