Chimeratech Overdragon (Quarter Century Secret Rare)

"Cyber Dragon" + 1+ Machine monstersMust be Fusion Summoned. If this card is Fusion Summoned: Send all other cards you control to the GY. The original ATK/DEF of this card each become equal to the number of Fusion Materials used for its Fusion Summon x 800. This card can attack your opponent's monsters a number of times each Battle Phase, up to the number of Fusion Materials used for its Fusion Summon.