Rainbow Dark Dragon across sets & languages(7)

• Battles of Legend: Relentless RevengeBLRR-EN054$1.00
• Legendary Collection 2LCGX-EN243—
• Legendary Duelists: Season 1LDS1-EN100$0.10
• Phantom DarknessPTDN-EN003$32.76
• Speed Duel GX: Duel Academy BoxSGX1-ENI09—
• Structure Deck: Legend of the Crystal BeastsSDCB-EN008—
• Structure Deck: Sacred BeastsSDSA-EN010$0.33

Same name, other languages or different rules text. Same-language reprints already sit in Printings above.