i am trying to build a mermail deck but am unsure how to make it work please build me a competitive build and explain if able the right way to play it

You're in luck, there were 2 undefeated Mermail decks at the Las Vegas Regional a week or so ago.
They looked something like this:

3 Mermail Abyssmegalo
3 Mermail Abyssteus
3 Mermail Abysspike
3 Mermail Abysslinde
3 Genex Undine
2 Genex Controller
2 Atlantean Heavy Infantry
2 Atlantean Marksman
1 Mermail Abyssgunde
1 Atlantean Dragoons
1 Tidal, Dragon Ruler of Waterfalls
1 Aqua Spirit

3 Mystical Space Typhoon
2 Salvage
1 Soul Charge

3 Abyss-Sphere
2 Phoenix Wing Wind Blast
2 Vanity's Emptiness
1 Solemn Warning
1 Compulsory Evacuation Device

2 Mermail Abyssgaios
1 Mecha Phantom Beast Dracossack
1 Number 11 - Big Eye
1 Bahamut Shark
1 Castel the Skyblaster Musketeer
1 Lavalval Chain
2 Abyss Dweller
1 Mermail Abysstrite
1 Leviair the Sea Dragon
1 Ghostrick Alucard
1 Leo, the Keeper of the Sacred Tree
1 Black Rose Dragon
1 Gungnir, Dragon of the Ice Barrier

You main game plan here centres around Mermail Abysslinde and Genex Undine - these monsters allow you to access any other monster in your deck. Undine can send Dragoons and Tidal to the Graveyard to access their powerful abilities, while Abysslinde summons Abysspike and Abyssmegalo From the deck.

You're primarily trying to wear away your opponent's resources using your Mermail effects to discard Atlanteans. Once that's done you can start making fields of multiple Xyz monsters using Tidal and your Level 7 Mermail monsters (Fields like Mermail Abyssgaios and Abyss Dweller are incredibly effective against the Graveyard-heavy meta)

At the same time your trap line helps keep things you can't handle with your monsters at bay (often discarding excess Genex Controllers searched by Undine for Phoenix Wing Wind Blast), and your spells remove opposing Spells/Traps and recycle your Atlanteans to make sure that Mermail Abyssmegalo is never dead in your hand.

You'll get a better idea of how if works by playing it, so I suggest you give that a go, see what you think.  


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I'm able to answer any and all questions related to the English Yu-Gi-Oh! game itself. This includes, but isn't limited to:

Deck Fixes: Either making suggestions and improvements on a deck you've already built, or building a deck from scratch for you. In either case, please give an idea of the kind of deck you're building, the level of play you're planning to use it in (small tournaments, regionals etc), and the kind of budget you're on.
Please format decks in a way that's easy to read. Each card name should be on its own line, with a number before it indicating how many you're playing. Please split decks into Monsters, Spells and Traps.

NOTE: A level of reasonability is assumed with this. I cannot build you a nationals winning deck based on monsters whose name starts with the Letter 'A' on a budget of 4($6)... Nor will I generally respond well to Questions touting "No Xyz, Synchro... etc" or disallowing cards from certain parts of the show. I haven't seen the show in a number of years and find these conditions to usually be poorly-defined.

Rulings: On any card interacting with any other card(s). Tell me the scenario, and I'll tell you what happens.

I won't be answering questions on whether a trade is fair or not, or on how much X-card is worth, as both these kinds of question can be answered by using Ebay's completed listings page.


Level 2 Judge Qualification,
Level 1 Player Management Qualification,
Konami Rules Certification 1,
Regularly Head Judges Local Events,
Tournament Wins/Top 8 placements too numerous to detail here

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