Knightmare Mermaid Forbidden
Link Effect Monster
Knightmare Mermaid is a Link Effect Monster (WATER/Fiend, Level 0) with 1000 ATK / - DEF. First printed in Flames of Destruction (2018). Forbidden on the TCG banlist since 2019-10-01.
- Type
- Link Monster
- Attribute
- WATER
- Monster type
- Fiend
- Level
- 0
- Link rating
- 1
- ATK / DEF
- 1000 / -
- Archetype
- Knightmare
- Banlist
- TCG Forbidden (since 2019-10-01) · OCG Forbidden · Master Duel Unlimited
- TCG release
- May 3, 2018
- Printings
- 2
Card text
1 "Knightmare" monster, except "Knightmare Mermaid" If this card is Link Summoned: You can discard 1 card; Special Summon 1 "Knightmare" monster from your Deck, then, if this card was co-linked when this effect was activated, you can draw 1 card. You can only use this effect of "Knightmare Mermaid" once per turn. Monsters on the field lose 1000 ATK/DEF, unless they are co-linked.
YGOPRODeck card-level price
≈$0.24 lowest USD figure across marketplaces, for no one printing
YGOPRODeck recorded a lowest available USD card-level price hint of ~$0.24 on Oct 26, 2026 (historical, not a printing-specific quote). It varies with printing, condition, edition, rarity, and grading. Check current listings before buying or selling.
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Printings & rarities
| Set | Set code | Rarity | Release | Price* | Buy |
|---|---|---|---|---|---|
| Flames of DestructionFLOD-EN043 · Rare · May 3, 2018 | FLOD-EN043 | Rare | May 3, 2018 | ~$0.24 1st Edition~$0.48 Unlimited | Buy on TCGplayerSearch eBay |
| 2019 Gold Sarcophagus Tin Mega PackMP19-EN025 · Prismatic Secret Rare · Aug 29, 2019 | MP19-EN025 | Prismatic Secret Rare | Aug 29, 2019 | ~$0.75 1st Edition~$0.67 Unlimited | Buy on TCGplayerSearch eBay |
*Approximate price hints, not appraisals. A price with a finish (1st Edition, Unlimited, Limited) is TCGplayer's for that set code, rarity and finish, via TCGCSV, updated Oct 26, 2026. A price marked YGOPRODeck is YGOPRODeck's figure for that printing. A dash means that printing has no price yet. Buy links are affiliate links.
Price hint history
Dated YGOPRODeck snapshots. These hints are not sales or market values.
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Knightmare Mermaid in other languages
| Japanese | トロイメア・マーメイド |
| Korean | 트로이메어 인어 |
| Chinese | 梦魇曲・美人鱼 |
| German | Albtraumritterin Meerjungfrau |
| French | Sirène, Chevalier du Cauchemar |
| Italian | Cavaliere dell'Incubo Sirena |
| Spanish | Caballero de Pesadilla Sirena |
| Portuguese | Cavaleira do Pesadelo Sereia |
