Mermail King - Neptabyss
WATER · Sea Serpent / Link Effect Monster · Link-3 · ATK 2300
2+ monsters, including a Fish, Sea Serpent, or Aqua monster
Your opponent cannot target WATER monsters this card points to with card effects. You can only use each of the following effects of "Mermail King - Neptabyss" once per turn. If a WATER monster(s) is sent to the GY to activate a card or effect (except during the Damage Step): You can take 1 "Abyss-" Equip Spell from your Deck or GY and either add it to your hand or equip it to this card. If this card in its owner's possession is destroyed by an opponent's card: You can add 1 "Atlantean" or "Mermail" monster from your Deck to your hand.
Is it legal?
TCGUnlimited (3)
OCGUnlimited (3)
Master DuelUnlimited (3)
Rarity: Rare (R)
Genesysnot allowed
Price
About $0.11–$0.17 across printings and stores (as of Oct 9, 2026). See listings on TCGplayer · eBay · Cardmarket (EU)
Price history & alerts
Played in tournaments
In 5 recent tournament lists, mostly Mermail (4), Mermail Atlantean (1).
Most often played with
Across the tournament lists that run Mermail King - Neptabyss: the share of those lists that also run each card.
Neptabyss, the Atlantean Prince100% of lists
Abyssrhine, the Atlantean Spirit100% of lists
Abysstrite, the Atlantean Spirit100% of lists
Mermail Abyssteus100% of lists
Marincess Coral Anemone100% of lists
Superancient Deepsea King Coelacanth100% of lists
Mermail Shadow Squad100% of lists
Atlantean Dragoons100% of lists
Poseidra Abyss, the Atlantean Dragon Lord100% of lists
Deep Sea Minstrel100% of lists
Mermail Abyssgaios100% of lists
Moulinglacia the Elemental Lord100% of lists
Printings
| Set | Code | Rarity |
|---|---|---|
| Limited Pack World Championship 2025 | 25LP-EN013 | Secret Rare |
| Limited Pack World Championship 2025 | 25LP-EN013 | Ultra Rare |
| 2025 Mega-Pack Tin | MP25-EN415 | Common |
| Rage of the Abyss | ROTA-EN046 | Quarter Century Secret Rare |
| Rage of the Abyss | ROTA-EN046 | Ultra Rare |
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