Ring of Destruction [RP02-EN066] Secret Rare Pendulum/Effect Monster you cannot use it for

you cannot use it for a Synchro Summon

you can select 1 Level 4 DARK Machine-Type monster from your Graveyard and Special Summon it in face-up Defense Position

Increase the ATK of this card by 1000 points for each Continuous Trap Card in your Graveyard

Set: Retro Pack 1 Card type: Normal Monster Rarity: Ultra Rare Attack: 2400 Defense: 2000 A ferocious dragon with a deadly attack

using monsters from your Deck as Fusion Material

Ring of Destruction [RP02-EN066] Secret Rare Pendulum/Effect Monster you cannot use it forSet: Retro Pack 2 Card type: Normal Trap Rarity: Secret Rare Destroy 1 face up monster and inflict damage to both players equal to its ATK.