Fallen of Albaz (Quarter Century Secret Rare)

If this card is Normal or Special Summoned (except during the Damage Step): You can discard 1 card; Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters on either field as Fusion Material, including this card, but you cannot use other monsters you control as Fusion Material. You can only use this effect of "Fallen of Albaz" once per turn.