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Knightmare Mermaid
WATER · Fiend / Link Effect Monster · Link-1 · ATK 1000
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.
Is it legal?
TCGForbidden
OCGForbidden
Master DuelUnlimited (3)
Rarity: Ultra Rare (UR)
Genesysnot allowed
Price
About $0.25–$0.30 across printings and stores (as of Oct 10, 2026). See listings on TCGplayer · eBay · Cardmarket (EU)
Price history & alerts
Played in tournaments
In 4 recent tournament lists, mostly Orcust (3), Phantom Knights Orcust (1).
Most often played with
Across the tournament lists that run Knightmare Mermaid: the share of those lists that also run each card.
Galatea-I, the Orcust Automaton100% of lists
Orcust Crescendo100% of lists
World Legacy - "World Wand"100% of lists
Knightmare Phoenix100% of lists
Orcust Knightmare100% of lists
Dingirsu, the Orcust of the Evening Star100% of lists
NT8000 - SIRIUS100% of lists
Orcust Harp Horror100% of lists
Foolish Burial100% of lists
S:P Little Knight100% of lists
Orcust Cymbal Skeleton100% of lists
I:P Masquerena100% of lists
Printings
| Set | Code | Rarity |
|---|---|---|
| Flames of Destruction | FLOD-EN043 | Rare |
| 2019 Gold Sarcophagus Tin Mega Pack | MP19-EN025 | Prismatic Secret Rare |
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