Evilswarm Ketos [BPW2-EN050] Super Rare Judge Promotional Cards If a "Stardust" Synchro Monster

If a "Stardust" Synchro Monster you control would Tribute itself to activate its effect

You can only use this effect of "Blackwing - Decay the Ill Wind" once per turn

Set: Legendary Collection Kaiba Card type: Normal Spell Rarity: Secret Rare Target 1 Level 7 or 8 Dragon monster in your GY

Set: The Lost Art Promotion Card type: Continuous Trap Rarity: Ultra Rare Activate this card by targeting 1 monster in your GY

Evilswarm Ketos [BPW2-EN050] Super Rare Judge Promotional Cards If a "Stardust" Synchro MonsterSet: Battle Pack 2: War of the Giants Round 2 Card type: Effect Monster Rarity: Super Rare Attack: 1750 Defense: 1050 You can Tribute this card then target 1 Spell Trap Card your opponent controls; destroy that target.