Fusion Armament

25th Anniversary Tin: Dueling Mirrors

“Reveal 1 Fusion Monster in your Extra Deck, and Special Summon 1 of the Fusion Materials whose name is mentioned on that monster from your Extra Deck or GY, but until the end of your opponent's turn, it cannot attack and its effects (if any) are negated. You can only activate 1 "Fusion Armament" per turn.”