Mermaid Knight

Effect Monster · WATER · Aqua · Level 4 · Umi

Market price

$0.49

An estimate from YGOPRODeck for a typical printing, refreshed yesterday.

While "Umi" is face-up on the field, this card can attack twice during the same Battle Phase.

Deck Search works without an account — it asks about the corpus, not about what you own.

Deck usage & meta stats

Across 47,952 decks in the corpus

Decks play it

0.1% of the corpus

#7,128

Most played

Of 14,229 cards played at all

1.58

Copies per deck

58% run 1

Of competitive decks

Against 0.1% of everything else

In the main deck of 50 decks. Sided in another 8, which is not counted above — completion is scored over the main and extra deck only, plus a Domain deck’s Deck Master.

Archetypes that play it

Share of that archetype’s own decks

Umi17.7%
Mermail4%
Frog0.7%
Melffy0.7%
Marincess0.5%
No archetype0.2%

Played by year

Share of the decks the corpus holds for that year

20190.1%
20200%
20210%
20220%
20230.1%
20240.1%
20250.1%
20260.1%

Printings

Every version of this card we hold, cheapest first. 4 printings, all priced.

Set	Rarity	Edition	Price	Foil
Structure Deck: Fury from the DeepSD4-EN011	Common	1st Edition	$0.49	—	Buy
Ancient SanctuaryAST-025	Common	Unlimited	$0.62	—	Buy
Ancient SanctuaryAST-025	Common	1st Edition	$1.40	—	Buy
Dark Revelation Volume 2DR2-EN137	Rare	Unlimited	$8.83	—	Buy

Prices from YGOPRODeck / TCGplayer, refreshed yesterday. Each is that printing’s own market price, which is why they differ from the single market price beside the card above — that one is what every deck cost on this site is worked out from. Buy links go to TCGplayer through YGOPRODeck, who provide this data.