Slifer the Sky Dragon [RA04-EN117] Quarter Century Secret Rare Token Monster ) Play Doomsday only if

) Play Doomsday only if there are 6 or more cards with blood debt in your banished zone

while it has an Xyz Material attached that was originally Spellcaster-Type

when an effect of a card in the Graveyard is activated: You can negate the activation

each playing a crucial role in your path to victory

Slifer the Sky Dragon [RA04-EN117] Quarter Century Secret Rare Token Monster ) Play Doomsday only ifSet: Quarter Century Stampede Card type: Effect Monster Rarity: Quarter Century Secret Rare Requires 3 Tributes to Normal Summon (cannot be Normal Set). This card's Normal Summon cannot be negated. When Normal Summoned, cards and effects cannot be activated. Once per turn, during the End Phase, if this card was Special Summoned: Send it to the GY. Gains 1000 ATK DEF for each card in your hand. If a monster(s) is Normal or Special Summoned to your