Underground Sea


Format Legality
Vintage Legal
Duel Commander Legal
Commander / EDH Legal
Legacy Legal
Tiny Leaders Legal

Printings View all

Set Rarity
Vintage Masters Rare
Masters Edition IV Rare
Masters Edition II Rare
Revised Edition Rare
Unlimited Edition Rare
Collector's Edition Rare
International Collector's Edition Rare
Limited Edition Beta Rare
Limited Edition Alpha Rare

Combos Browse all

Underground Sea

Land — Island Swamp

(: Add or to your mana pool.)

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Price & Acquistion Set Price Alerts

Cardhoarder (MTGO) -2%

25.3 TIX $23.79 Foil

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Underground Sea Discussion

Matrixxx999 on Somebody stop me!

3 days ago

Well, I counted nine targets for fetchlands:

  1. Godless Shrine
  2. Hallowed Fountain
  3. Island
  4. Plains
  5. Scrubland
  6. Swamp
  7. Tundra
  8. Underground Sea
  9. Watery Grave

But to be honest, I can only recall a couple of games in which all the fetchlands were used.

I also had a lot of games in which Chromatic Lantern was on the battlefield. So all the lands (including fetchlands) were helpful.

sirbar on H: High end cards W: ...

1 week ago

Hey there! I am looking to swap out some of my more expensive pieces for cards that I will be more likely to play.

So here is what I got:

4 Force of Will Alliances

1 Taiga Rev

1 Liliana of the Veil

1 Liliana, the Last Hope german

1 Twilight Mire

3 Windswept Heath ons

What I am looking for:

2 Underground Sea

1 Badlands

4 Lion's Eye Diamond

4 Polluted Delta (onslaught heavily prefered)

plus other offers...

Also have my binder for trade with different wants in it.

sirbar on Ant mana base

3 weeks ago

So i have been playing ANT (Ad nausea tendrils) a fair bit and i haven't been able to decide on my flex spots in the mana base. At the moment I am running 8 fetches, 2 Underground Sea, 1 Swamp, 2 Island s and 1 Volcanic Island. Should I side a Tropical Island or a Bayou? Do I run a Badlands in place of the Volcanic Island? Does the Tropical Island/Bayou belong main deck? I appreciate the help.

Thank you,


MRDOOM3 on Oloro, Ageless Potato

3 weeks ago

To answer your question, yes, Urborg, Tomb of Yawgmoth is a Swamp, since the text says "Each land". And yes, with Urborg out, all your lands can also tap for black mana if they were unable to before. So, your Plains becomes a Scrubland, and your Island becomes an Underground Sea. Same can be said about your dual lands as well.

Lilbrudder on All Nightmare Long (SBT Primer)

1 month ago

Pheardemons: Carpet of flowers is one of the most broken cards in cEDH. It is an auto-include if you play green in cEDH pods due to the high concentration of blue decks. With that being said, it is a situational card at most commander nights given that people are more focused on fun decks and there are far fewer decks that consistently follow up a turn 1 Tropical Island with a turn 2 Underground Sea.

costrander3689: Thanks Brother!

Grantley91: No Original duals (can get by with other dual lands); No grim tutor (Its the worst tutor in the deck); imperial seal would hurt ALOT more to lose but not many people can afford it. You could replace these with a high number of iffy tutors that would imbalance the deck some and make one of the combos a focal point. Eldritch Evolution, Summoner's Pact, Merchant Scroll, Shred Memory; Muddle the Mixture Drift of Phantasms, Fauna Shaman could all be justified but aren't ideal. You could also just add more interaction. Beyond that cutting Force of Will or a Mox Diamond could make sense.

enpc: Extract is a solid tutor. If I was making food chain the primary combo I would definitely include it, but it is my backup atm. If I focus more on it its definitely a solid include and a great focused hate piece to decks with a single point of failure.

Sgtpopnfreash on Ad Nauseam Doomsday Zur

1 month ago

Second question. Do you think 2.1 average CMC is too high for Ad nauseam/DD Oloro? Its not as competitive as your deck because I dont have cards like Timetwister Grim Tutor Underground Sea, but I am trying to make it as strong as possible with what I have access to.

euananddalesaccount on Zombie Reanimator

1 month ago

is this meant to be competitive legacy? if not, the good. Because semi-competitive legacy decks use ODLs. Underground Sea should do the trick, with some Polluted Deltas.

R0llingThunder on Chromium's a sphinx, right?

1 month ago


-Underground Sea

+Underground River

Needed for legacy.

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