Sea Stealth Attack

Sea Stealth Attack
TypeTrap Card
Card Effect TypeEffect / Condition / Quick-like / Trigger-like


When this card is activated: You can activate 1 "Umi" from your hand or GY. While "Umi" is on the field, this face-up card gains these effects.
● Once per turn: You can banish 1 WATER monster you control until the End Phase; this turn, face-up Spells/Traps you control cannot be destroyed by your opponent's card effects (even if this card leaves the field).
● At the start of the Damage Step, if your WATER monster whose original Level is 5 or higher battles an opponent's monster: Destroy that opponent's monster.

How to get / Rarity

PackAbyss Encounters [SR]
Level-up reward--
Victory against--
Card trader--




  • Can place 1 “Umi” Field Spell from your Hand or Graveyard when this
    card is activated.
  • Once per turn you can banish any WATER monster you control until the
    End Phase, and all your face-up Spell or Trap cards cannot be destroyed
    by your opponent’s effects.
  • Enables WATER monster with original level 5 or higher to destroy
    opponent’s monster at the start of Damage step.


  • Relies on “Umi” Field Spell to activate.


  • If you have replaced Umi with A Legendary Ocean, do not activate this
    card’s effect of placing Umi from your Graveyard, it will return Umi to
    the Field and destroy A Legendary Ocean.
  • You can banish any WATER monster that has sustained negative effects
    from cards like Wall of Disruption, and return to the Field during the
    End Phase with its stats restored.
  • When your opponent activates Super Rush Headlong in response to your
    level 5 or higher WATER monster’s attack, Super Rush Headlong will take
    precedence over Sea Stealth Attack’s effect that allows level 5 or
    higher WATER monsters to destroy opponent’s monster at start of Damage
    step. However, you can choose to banish your attacking level 5 or
    higher WATER monster instead to avoid being destroyed by Super Rush
  • When your opponent uses Cosmic Cyclone to banish your Sea Stealth
    Attack (after you have banished a WATER monster), your banished WATER
    monster still returns to the Field at the End Phase.

Field Spell

You require these Field Spell to activate Sea Stealth Attack. A good combo is to use Warrior of Atlantis to search for A Legendary Ocean from your Deck.

Recommended Monsters

These WATER monsters with original level 5 or higher can destroy your opponent’s monsters at the start of Damage step.

Useful Skills

[Skill] descriptionUser
Mythic Depths
Begins Duel with the Field Spell "Umi" activated.
Mako Tsunami
Mako Tsunami



List of Cards by Card Types

List of Cards by Levels


Comments are appreciated!

Please drop your ideas and suggestions below. We keep updating the page based on your posts!


Hot New Top
Just ban this card and Amazoness onslaught in the meantime. Both are just stupidly broken. Same as the stupid Sylvan meta where you just sit and watch the other player burning his deck out.
<< Anonymous(Anonymous)
not gonna happen Reply
super rares and ultra rares from packs will never get limited
<< Anonymous(not gonna happen)
Anonymous 13days ago Reply
and that's where you're wrong ..
can someone please explain to me how this cancer device can activate its banishing effect literally right after you draw???
<< Anonymous
Anonymous Reply
Because traps and quick-play can be activated in the draw phase
this card and amazoness onslaught are out of control! every duel I have to encounter either one of the two or sylvians, with the latter actually being the mildest and slightly possible to beat
why tf did they have to release this card it basically makes its controller completely invincible! amazoness onslaught is almost as bad but at least that card can be destroyed with card effects, this card literally just makes spells, traps and monsters completely untouchable!!
<< Anonymous
Aquablast Reply
I think Amazoness Onslaught is worse, since it banishes your monster. I could beat SSA by repeatedly summoning Arkbrave Dragon from the grave, but if Amazoness Onslaught touches my dragon... it is over for me. Btw, you can chain and destroy SSA before it resolves. You'd still need a quick-play/trap to chain plus one more card to bait your opponent into using SSA's banishing effect though.
Why everytime sylvan activate their effect in GY i cannot chain with this even toggle button is ON?????
Sea Stealth Hater
Fuck this card
<< Anonymous(Sea Stealth Hater)
Anonymous Reply
I think Amazoness onslaught is worse now
hi guys,I got some weird luck and now I have 3 SSA but only 1 Citadel Whale and no Legendary Fisherman 2(kinda bad resets).can someone help me build a fun deck?thank you in advance
<< Anonymous
Anonymous Reply
Just enter your credit card number in Google play and you'll be able to build anything you want
<< Anonymous
Anonymous Reply
Plesion, B.E.S. Crystal Core, Gogiga Gagagigo
<< Anonymous
Anonymous Reply
You can build a casual fun ssa gishki deck. Use opponent monster to ritual summon and banish it to have it regain original attack. It's only meant for casual and fun play but not for high rank play
<< Anonymous
Anonymous Reply
Where are those Sea Stealth decks, yo?
Oh yeah, someone mentioned destroying SSA/Umi/Legendary Ocean with chaining shenanigans. Basically, just bait your opponent into activating SSA's banishing effect, and chain a S/T destruction card to it. Since the last card in the chain goes first, you will be able to destroy SSA before it takes effect. So if you don't have Cosmic Cyclone or Anti-Magic Arrow... packing some S/T destruction quick-play spells might do too.
<< Anonymous(Aquablast)
Anonymous Reply
I’ll just make it stupid for me to understand.

Most people try to kill the trap on sight? - thus ending in a fail.(they will banish and shit is immune to destruction).

Your suggestion is,

Do a fake bait attack and when they vanish it, activate a QUICK PLAY destruction of trap shit.

Someone please tell me how you counter this card. It’s all over PVP and they should really limit this card to just 1. Anything you attack with gets destroyed
<< Anonymous
Anonymous Reply
you need to find a way to destroy the trap.

<< Anonymous
Anonymous Reply
Phoenix Deck obliterates this of a deck.
still you'll face struggles. And some decks can turn your Phoenix into a KFC
<< Anonymous
Anonymous Reply
Yeap phoenix can be a great counter if you can bait him well.
<< Anonymous
Anonymous Reply
Bait Vanish.
Super Rush the other monster.

Problem is when the fuqq boy vanishes traps are immune from distruction.

You need like 2 monters,
Life points low enough to kill,
Super Rushes.
Destroy the trap first >
He will banish one monster >
Summon a monster..... >
your move
they need to limit this shit to 1. way to OP.
I wonder if cards like Mirage Dragon would stop your opponent from using SSA during battle phase, like Anti-Magic Arrows? Maybe you could bait the enemy into attacking your Mirage Dragon while having something like Wall of Disruption face down... Has anyone tried something like this against SSA? Maybe I should try playing my Horus deck again.
<< Anonymous(Aquablast)
Anonymous Reply
Mirage Dragon only prevents Trap Cards being activated. It doesn't stop the effects of already active ones from being activated. Similarly, Ancient Gear monsters don't bypass Sea Stealth Attack either.
<< Anonymous
Anonymous Reply
correct. was experimenting a little with it as well with Ancient Gears and learned the hard way. Live and learn.

Best way I found to beat a SSA player is if you manage to summon a more powerful monster than theirs (if they have lv 4 monsters only though) and they misplay their activation of banishing their monsters. E-con take play helps here.

Downside if they have a lv 5 monster.
<< Anonymous
Aquablast Reply
Yeah, I believe you guys. Just wish that there are more cards that work against SSA. At least we know Anti-Magic Arrows will work, eh? I guess hoping for the SSA player to make mistakes might be better than just surrendering.

Commens and feedback




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