Ceruli, Guru of Dark World [SDGU-EN003] Super Rare Bonz When an attack is declared

When an attack is declared involving this card that was Synchro Summoned this turn and another monster: You can make this card's ATK become double its original ATK until the end of this turn

Set: Dark Beginning 1 Card type: Effect Monster Rarity: Rare Attack: 1400 Defense: 1100 When this card is sent to the Graveyard as a result of battle

Set: Invasion: Vengeance Card type: Fusion/Effect Monster Rarity: Ultra Rare Attack: 3500 Defense: 2000 1 Level 7 "Red-Eyes" monster + 1 Level 6 Dragon-Type monster If this card is Fusion Summoned: You can send 1 "Red-Eyes" monster from your hand or Deck to the Graveyard

Set: High-Speed Riders Card type: Synchro/Effect Monster Rarity: Super Rare Attack: 3000 Defense: 2000 1 Tuner + 1 or more non-Tuner monsters Once per turn

Ceruli, Guru of Dark World [SDGU-EN003] Super Rare Bonz When an attack is declaredSet: Structure Deck: Gates of the Underworld Card type: Effect Monster Rarity: Super Rare Attack: 100 Defense: 300 If this card is discarded to the Graveyard by a card effect: Special Summon this card from the Graveyard to your opponent's side of the field in face up Defense Position. When this card is Special Summoned by the effect of a "Dark World" card: Your opponent must discard 1 card.