Number 17: Leviathan Dragon [RA04-EN154] Quarter Century Secret Rare Armageddon Expo This costs [1 Resource] less

This costs [1 Resource] less to activate for each Draconic chain link you control

If a card with 6 or more [Power] is discarded this way

Set: Rarity Collection II (25th Anniversary Edition) Card type: Fusion/Effect Monster Rarity: Quarter Century Secret Rare Attack: 3000 Defense: 2500 "Dark Magician" + "Red-Eyes Black Dragon" or 1 Dragon Effect Monster Cannot be destroyed by card effects

When a card is sent from the Deck or the field to your Graveyard: Destroy this card

other than "Constellar Ptolemy M7"

Number 17: Leviathan Dragon [RA04-EN154] Quarter Century Secret Rare Armageddon Expo This costs [1 Resource] lessSet: Quarter Century Stampede Card type: Xyz Effect Monster Rarity: Quarter Century Secret Rare 2 Level 3 monstersCannot attack directly unless it has material. Once per turn: You can detach 1 material from this card; it gains 500 ATK.