Exodia, the Legendary Defender

Cannot be Special Summoned. You can Tribute 5 monsters to Tribute Summon (but not Set) this card. This card's ATK/DEF become the combined original ATK/DEF of the Tributed monsters. If this card Summoned this way destroys a DARK Fiend monster owned by your opponent, you win the Duel at the end of the Damage Step.