Your search for "Citadel Whale LEDU-EN016" revealed the following:
Citadel Whale - LEDU-EN016 - Ultra Rare - 1st Edition from Legendary Duelists 1st Edition, available at 401 Games Canada. Rarity: Ultra Rare Card Text:If this card is in your hand or GY: You can Tribute 2 WATER monsters; Special...
Citadel Whale - LED9-EN026 - Common - 1st Edition
Legendary Duelists: Duels From the Deep 1st Edition
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Citadel Whale - LED9-EN026 - Common - 1st Edition from Legendary Duelists: Duels From the Deep 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:If this card is in your hand or GY: You can Tribute 2 WATER...