Your search for "Knightmare Mermaid FLOD-EN043" revealed the following:
Knightmare Mermaid - FLOD-EN043 - Rare - 1st Edition from Flames of Destruction 1st Edition, available at 401 Games Canada. Rarity: Rare Card Text:1 "Knightmare" monster, except "Knightmare Mermaid"If this card is Link Summoned: You can discard 1 card; Special...
Knightmare Mermaid - FLOD-EN043 - Rare - Unlimited from Flames of Destruction Unlimited, available at 401 Games Canada. Rarity: Rare Card Text:1 "Knightmare" monster, except "Knightmare Mermaid"If this card is Link Summoned: You can discard 1 card; Special Summon 1...