Umi and Daedalus Are Back!
Atlantis, the Dragon City is a new card series introduced in the Beyond the Brave booster pack in July 2026. The series takes its name from the Field Spell of the same name, with the rest of the cards built around it or directly referencing it. On top of that, these cards were also designed around the Daedalus archetype and the Umi card series.
Basically, every monster in the archetype is exclusively WATER Attribute and exclusively Sea Serpent Type, as a reference to Daedalus himself. The monsters range from Level 4 to Level 7 and make use of Link Summoning, setting them apart from the WATER-based Shark Xyz archetype.
The deck’s main feature is its ability to change the name of any Monster Card to Umi. Absolutely every monster in the Monster Zone, and even the Continuous Spell Atlantis Advent in the Spell & Trap Zone, legally becomes Umi. Beyond that, the deck’s monsters can Special Summon themselves with incredible ease as long as Umi is present on the field.
Yu-Gi-Oh!’s 14th series seems to be making its intentions pretty clear: bringing older decks back into the game or completely reinventing them. Just look at the first booster packs with Yami Yugi on the cover. There’s clearly a strong sense of nostalgia here, bringing back a classic monster like Daedalus and one of the most iconic Field Spells in the game’s history, Umi. We’ll see the same approach with the new Time Wizard, the LIGHT and DARK Ritual series, new Aleister/Invoked support, Adamancipator, Destiny HERO, Jinzo, and plenty more. The game has finally decided to give Umi a helping hand, considering the strategy used to rely entirely on drawing that one specific card and getting it onto the field. And you can be sure that plenty of WATER decks are going to benefit from this archetype and become much stronger moving forward.
In my view, this new deck definitely has the potential to make a noticeable impact on the meta, placing itself comfortably among the strongest decks in the format thanks to the many possibilities created by its name-changing mechanic. That is, of course, alongside the extremely powerful effects of the deck’s Boss Monsters.
Could this finally be the moment for Ryota Kajiki to stand a chance against the legendary Attack the Moon?
Atlantis Cards Breakdown
Main Deck Monsters
Fiendish Vortex of Atlantis See
WATER | Sea Serpent | Level 4 | ATK 1400 / DEF 1800
This card’s name becomes “Umi” while in the Monster Zone.
You can only use each of the following effects of “Fiendish Vortex of Atlantis” once per turn.
[1] If this card is Normal or Special Summoned: You can send 1 card that mentions “Atlantis, the Dragon City” from your Deck to the GY, except “Fiendish Vortex of Atlantis”.
[2] If this card is sent to the GY and you control “Umi”: You can Special Summon 1 WATER monster from your hand.
Monstrous Arms of Atlantis See
WATER | Sea Serpent | Level 4 | ATK 1500 / DEF 1200
This card’s name becomes “Umi” while in the Monster Zone.
You can only use each of the following effects of “Monstrous Arms of Atlantis” once per turn.
[1] If this card is Normal or Special Summoned: You can target 1 monster in your GY that mentions “Atlantis, the Dragon City”; Special Summon it in Defense Position.
[2] When your opponent activates a monster effect (Quick Effect): You can banish this card from your field or GY and send 1 face-up “Umi” you control to the GY; negate that effect.
General of Atlantis See
WATER | Sea Serpent | Level 5 | ATK 2100 / DEF 1400
This card’s name becomes “Umi” while in the Monster Zone.
You can only use each of the following effects of “General of Atlantis” once per turn.
[1] You can discard this card; add 1 Spell/Trap that mentions “Atlantis, the Dragon City” from your Deck to your hand.
[2] If this card is in your GY and you control “Umi”: You can Special Summon this card.
Atlantis Dragon Lord – Daedalus See
WATER | Sea Serpent | Level 7 | ATK 2600 / DEF 1500
This card’s name becomes “Umi” while in the Monster Zone.
You can only use each of the following effects of “Atlantis Dragon Lord – Daedalus” once per turn.
[1] If you control “Atlantis, the Dragon City” or “Umi”: You can Special Summon this card from your hand.
[2] You can send up to 3 face-up “Umi” you control to the GY; add that many cards that mention “Atlantis, the Dragon City” from your Deck to your hand, except Level 7 monsters, then you can send 1 card on the field to the GY.
Extra Deck Monsters
Levia-Dragoon – Daedalus See
WATER | Sea Serpent | Link 3 | ATK 2600
3 WATER monsters
This card’s name becomes “Umi” while in the Monster Zone.
You can only use each of the following effects of “Levia-Dragoon – Daedalus” once per turn.
[1] If this card is Link Summoned: You can Special Summon 1 monster that mentions “Atlantis, the Dragon City” from your Deck.
[2] During the Main Phase (Quick Effect): You can send 1 face-up “Umi” you control to the GY; discard your opponent’s entire hand, and if you do, they draw the same number of cards. Neither player can activate cards or effects in response to this effect’s activation.
Blue Ocean Dragon Lord – Neo-Daedalus Rage See
WATER | Sea Serpent | Link 4 | ATK 2900
4 monsters
This card’s name becomes “Umi” while in the Monster Zone.
[1] If this card is Link Summoned: You can Special Summon up to 3 monsters that mention “Atlantis, the Dragon City” from your GY to your zones this card points to, also you cannot Special Summon for the rest of this turn.
[2] Once per turn (Quick Effect): You can send 1 face-up “Umi” you control to the GY; send all cards on the field to the GY, except “Umi”.
Support Cards
Atlantis Call See
Normal Spell
[1] Add 1 monster that mentions “Atlantis, the Dragon City” from your Deck to your hand, then if you control “Atlantis, the Dragon City”, you can negate the effects of 1 Effect Monster your opponent controls until the end of this turn.
[2] If you control “Umi”: You can banish this card from your GY; all WATER monsters you currently control gain 500 ATK/DEF.
You can only use each effect of “Atlantis Call” once per turn.
Atlantis Advent See
Continuous Spell
This card’s name becomes “Umi” while in the Spell & Trap Zone.
You can only use each of the following effects of “Atlantis Advent” once per turn.
[1] During your Main Phase: You can place 1 “Atlantis, the Dragon City” or “Umi” from your Deck face-up in your Field Zone.
[2] If this card is sent to the GY: You can add 1 Level 7 Sea Serpent monster from your Deck to your hand.
Atlantis, the Dragon City See
Field Spell
[1] While a monster that mentions “Atlantis, the Dragon City” is on the field, reduce the Levels of all monsters in both players’ hands and fields by 1.
[2] If you Link Summon a “Daedalus” monster, you can reduce the material requirement listed on it by 1 and Link Summon it with 1 less material.
[3] If this card is in your GY and you control “Umi”: You can place this card face-up on your field. You can only use this effect of “Atlantis, the Dragon City” once per turn.
Daedalus Maelstrom See
Counter Trap
[1] When your opponent would Normal or Special Summon a monster(s) while you control “Atlantis, the Dragon City”: Negate the Summon, and if you do, destroy that monster(s), then if you control a WATER Link Monster, you can destroy all non-WATER monsters on the field.
[2] You can banish this card from your GY and send 1 face-up “Umi” you control to the GY, then target 1 monster your opponent controls; send it to the GY.
You can only use 1 “Daedalus Maelstrom” effect per turn, and only once that turn.
