Slifer the Sky Dragon (Ultra Rare) [GBI-001] Ultra Rare Common Set: Cybernetic Revolution Card type:

Set: Cybernetic Revolution Card type: Fusion/Effect Monster Rarity: Ultimate Rare Attack: 4000 Defense: 2800 "Cyber Dragon" + "Cyber Dragon" + "Cyber Dragon" A Fusion Summon of this card can only be conducted with the above Fusion Material Monsters

or card effects

you can Special Summon 1 Dragon-Type monster

except by removing from play 1 "Stardust Dragon" from your Extra Deck

you can also banish monsters from your field and/or either player's GY as Fusion Material

Slifer the Sky Dragon (Ultra Rare) [GBI-001] Ultra Rare Common Set: Cybernetic Revolution Card type:Set: American God Cards Card type: Normal Monster Rarity: Ultra Rare Attack: X000 Defense: X000 The heavens twist and thunder roars, signaling the coming of this ancient creature, and the dawn of true power.