- tcgrate
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- Yu-Gi-Oh!
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- 2025 Mega-Pack
- Mermail King - Neptabyss
Yu-Gi-Oh! · 2025 Mega-Pack · #MP25-EN415 · Common
Mermail King - Neptabyss
Yu-Gi-Oh! card price for Mermail King - Neptabyss: $0.17 market, from $0.01 at the cheapest listing, 1st Edition printing, updated Oct 19, 2026. Full price history since Sep 6, 2025 below.
Sellers right now
Market price is what a near-mint copy actually sold for. The cheapest listing is what a seller asks today — on thin markets the two differ a lot.
Where to buy
One year
Price story
Mermail King - Neptabyss came out in September 2025; we leave the first weeks out of this story, because early prices are set before real supply exists. Over the past twelve months it moved +54.6%, trading between $0.04 and $0.29. The current price is in the middle of that range. Listings currently start at $0.01; over the last 30 days the market price averaged $0.25.
Printings
The card in play
- Card type
- Link/Effect Monster
- Attribute
- WATER
- Monster type
- Sea Serpent
- Link arrows
- Bottom-Left;Bottom;Bottom-Right
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.
