Underground Sea

Legality

Format Legality
Tiny Leaders Legal
Noble Legal
Leviathan Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
MTGO Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
1v1 Commander Legal
Duel Commander Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Vintage Masters (VMA) Rare
Masters Edition IV (ME4) Rare
Masters Edition II (ME2) Rare
Revised Edition (3ED) Rare
Revised Foreign Black Border (3EDFBB) Rare
Unlimited Edition (2ED) Rare
Collector's Edition (CED) Rare
International Collector's Edition (CEI) Rare
Limited Edition Beta (LEB) Rare
Limited Edition Alpha (LEA) Rare

Combos Browse all

Underground Sea

Land — Island Swamp

(: Add or to your mana pool.)

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Underground Sea Discussion

MindAblaze on “I don’t like playing with ...

3 days ago

hah. I can’t believe it’s been that long! You’re welcome, I’m sure it’s come around on other decks over the years.

The precons go for about 40 and my deck, with the duals is about 60 times that. I don’t actually have a Volcanic Island and Underground Sea in there yet though.

DlCK on Semi-Competitive Jodah, Archmage Eternal

1 week ago

This deck is nearly perfect, but there's just a few areas of weakness that demand immediate attention.

First off, I would remove the following cards: Abrupt Decay, Angel's Grace, Anguished Unmaking, Animate Dead, Arcane Denial, Avacyn, Angel of Hope, Badlands, Bayou, Birds of Paradise, Blood Crypt, Bloodstained Mire, Brainstorm, Breeding Pool, Chromatic Lantern, Chrome Mox, City of Brass, Command Tower, Cultivate, Cyclonic Rift, Dance of the Dead, Deathrite Shaman, Decree of Pain, Delay, Demonic Tutor, Enter the Infinite, Exploration, Farseek, Fellwar Stone, Fist of Suns, Flooded Strand, Godless Shrine, Hallowed Fountain, In Garruk's Wake, Intuition, Jin-Gitaxias, Core Augur, Jodah, Archmage Eternal, Kozilek, Butcher of Truth, Laboratory Maniac, Lotus Cobra, Maelstrom Wanderer, Mana Confluence, Mana Crypt, Marsh Flats, Merciless Eviction, Misty Rainforest, Mox Diamond, Myojin of Night's Reach, Myojin of Seeing Winds, Mystic Remora, Mystical Tutor, Nature's Claim, Nature's Lore, Negate, Omniscience, Oracle of Mul Daya, Overgrown Tomb, Painful Truths, Polluted Delta, Praetor's Counsel, Progenitus, Rhystic Study, Rise of the Dark Realms, Savannah, Scalding Tarn, Scrubland, Sensei's Divining Top, Show and Tell, Skyshroud Claim, Sol Ring, Steam Vents, Stomping Ground, Storm Herd, Survival of the Fittest, Swan Song, Swords to Plowshares, Sylvan Library, Taiga, Tainted Pact, Temple Garden, Terastodon, Three Visits, Time Stretch, Toxic Deluge, Tropical Island, Tundra, Ulamog, the Ceaseless Hunger, Underground Sea, Vampiric Tutor, Verdant Catacombs, Volcanic Island, Vorinclex, Voice of Hunger, Watery Grave, Windswept Heath, Wooded Foothills, and Zacama, Primal Calamity.

There's really nothing you could replace these cards with that would make this deck competitive, so I'd recommend just stopping here. Good work.

Penthoplayer on 100% cEDH Aminatou shenanigans

3 weeks ago

So, I see a lot of changes for general power level upgrades. I can't give anything specific to this deck, as I can't tell what the deck is attempting to accomplish at a quick look through the list, but these should be in every cEDH list that can run them.

First of all, remember cEDH is a turn 3 format, so you need all your lands to enter untapped unconditionally. I see several that have more difficult to reach requirements, only 5 fetches when you should run 9 (missing Windswept Heath, Misty Rainforest, and Scalding Tarn), no true duals (Tundra, Underground Sea, and Scrubland), which I understand due to price, and no City of Brass or Exotic Orchard. I also don't see an Enlightened Tutor, Timetwister (Once again, I recognize it's expensive, though), Imperial Seal, Chrome Mox, Flusterstorm, Dispel, or any way to get those expensive creatures into the graveyard to Reanimate, or any reanimation spells. That curve is incredibly high. Average CMC without a lot of reanimation should be About 1.8, and your's is at 3.27.

Lil_Kalki on Aminatou: Nihilistic Tendencies (Stax)

1 month ago

Hey there. Thank you for the comment on my Aminatou deck, Dare to Believe, Dare to Become.

I am going to make this comment mostly centered on your land base. Even in a deck where the curve caps at 5 (not even peaks, caps!), and even with rocks (and free ones at that), 32 lands is far too few to reliably get your land drops where it matters. Now, I’d suggest that maybe this is offset by the filtering power of this deck but I don’t exactly 100% trust in that principle when things cost mana in the first place.

Don’t get me wrong; the deck is pretty sound regarding it’s contents and the quality of said contents. However, you need potatoes to go with that meat.

The 3-tax Rishadan is honestly a win-more card if you have your engine going well enough already, and tbh the 1-tax one won’t do enough lategame. I’d swap them out for 2 lands that produce blue. Not sure how effective Cephalid Coliseum is for you but that’s probably a solid maybe. That and a Moonring Island may suffice to that end.

Anyway another consideration to take into account is that you (presently) have too many blue costs in your spells, and not enough mana sources to offset the ratio to a good degree. If you look at my deck (admittedly too budget for say an Underground Sea or even an Arid Mesa), you’ll see that everything is aligned in that color ratio pie chart that TappedOut has available. Yours has an over abundance of blue costs, or an under-abundance, so to speak, of blue mana sources. That’s mainly why I suggested those two lands above, at the cost of two blue-costing spells. It might not completely even it out, but it’s a start and I really would suggest investigating that a bit further. :)

rgwenceslao on Grixis Twin

2 months ago

Morphic Pool for Underground Sea? Morphic is not fetchable because it is neither swamp nor island right? Was that done due to budget considerations?

Starsky2814 on Protean Chromium, Elder Dragon

2 months ago

I finally got to get some games in with Chromium! Official record is 2-0 before putting it away. First game was a little slow and won on turn 8, but I need to talk about game two. I pulled off a “W” on turn 4! Not bad for a “slow” commander. Here is how the game played out.

Opening hand: Mana Crypt, Swamp, Underground Sea, Talisman of Progress, Traumatize, Exquisite Blood and Replenish.

Turn 1: Draw Fellwar Stone, land drop Underground Sea, cast Mana Crypt, tap it to cast Talisman of Progress, tap that and land to cast Fellwar Stone. End turn.

Turn 2: Lost 2 life on failed coin toss. Draw Mana Confluence, land drop Swamp, cast Exquisite Blood. End turn.

Turn 3: Won coin toss. Draw Dark Ritual, land drop Mana Confluence, cast Chromium, the Mutable. End turn.

Turn 4: Won coin toss. Draw Auramancer's Guise. Tap Swamp to cast Dark Ritual, used the in mana pool in combination of tapping Underground Sea and Talisman of Progress for the , to cast Traumatize and mill myself 44 cards. Tapped out to cast Replenish to reanimate tons of lost auras and with it Sanguine Bond. Swung Chromium, the Mutable and won with the win con of Exquisite Blood + Sanguine Bond !

What a fun game!

SynergyBuild on Izzet's Divide and Conquer

2 months ago

Two stax lists, a midrange list, and five combo lists, all are tier one, and this had not won a single game against them.

I understand that "Competitive is far more than rushing through the first turns for a win, it about gaining of hold of every advantage the deck offers with the given hand and draws." I started this by going over the three competitive archetypes, combo, stax and control, this lists offers about nothing to all three of those archetypes.


Your list runs no powerful combos, no stax locks, and extremely little control. Your commander synergies very little with the deck, and runs no ramp, minimal card draw, and bad countermagic.


Lets take a look at this deck considered competitive:

What can you do turn one to a random hand against Food Chain Tazri, they can turn one a Bloodstained Mire into an Underground Sea, and cast an Vampiric Tutor for a Food Chain on your end step.

The best you can do is a Tome Scour, of course this won't mill the card on top, as they did it on your end step, but whatever.

Wow, you have all of 1 card that is actually castable turn 1. Half of your non-land cards require 4+ mana to cast. Many cEDH decks require 3 or less mana to cast every spell in their deck. You run all of 0 pieces of ramp, and no efficient way to win a game against those decks cosnidering even your commander won't cheat them out until turn 8 on your curve.

That is fine though, that means you aren't a fast-paced combo build, it doesn't mean you are not competitive though, stax and control can be great decks, that win very late in the game, turn 8-20 occasionally are when they win.

Stax decks attempt to shut out their combo opponents, you opponent over with Food Chain + Eternal Scourge trying to make infinite mana? Sphere of Safety shuts them down. Try to go off with turns in Narset, Enlightened Master, Stranglehold that. Trying to beat my face in with Blood Pod, Moat that. Then I will go off with infinite flying Pestermite tokens turn 13 with Kiki-Jiki, Mirror Breaker after all of you can't do anything.

What does this deck have in terms of stax?

Well, it has War Tax, which require mana that you cannot efficiently use against a Blood Pod deck, as they will stax you out before you them, Armageddon and Ravages of War are a blowout to this deck since you don't run artifact or creature mana. Propaganda would be a better choice, despite not being good enough a choice to make this deck competitive.

Opposition and Aphetto Grifter are decent options for token builds with tons of creatures, on the upkeep of an opponent's turn, you tap down all of their lands, it is pretty good, but as this deck can't do that before it will die, they aren't very good at a competitive table.

Frozen AEther this is truely the best stax you run, it can stop some Kiki-Jiki, Mirror Breaker combos, slows down other peoples mana in terms of dorks, rocks, and lands. It is also good as it doesn't affect you, if you could run a Sol Ring, Mana Crypt, Mana Vault or anything to make it come down before your opponents win, then it might be useful.

Urabrask the Hidden it is a bad version of Frozen AEther, you don't need haste to combo out or anything, and it just is slow and clunk and easy to remove.

Fatespinner at least it is in your tribe, otherwise it would just occasionally deny 1 or 2 damage, any time a player needs combat, they win that turn. If they do, they you deny a card, and die immediately after, otherwise they take away a combat they wouldn't need anyway.

Orbs of Warding good card if it was a couple mana less, or you could control/stax a game to pull it off, otherwise it doesn't need to be here.

All in all, you aren't a stax deck, you run little to no good stax cards, the few you run that sees play require ramp.


Well, I guess this is a bad cEDH deck, or control. You run 21 spells that could be used as removal or countermagic, 10 that are 4 or less mana. This is awful for a control deck, unless they are Force of Will and just look like 5 mana, or you run a lot of ramp, sadly neither are true.


Again, this is not a bad deck, simply a casual one, not cEDH material. That is why your list isn't competitive, yes, I have run a spellshaper tribal Damia deck at state level play, not a tournament at state level, just a game at a grand prix side event. That deck isn't good, but it is fun. State level play means nothing. cEDH is actual competitive decks, unlike this one, playing at the upper echelons of the format, in fact, it is so different compared to normal EDH, that is it called cEDH.

This may be winning games where you play, but I have tested it, and I implore you to sit down next to some good stax and fast-paced combo players, against $5600 The Gitrog Monster builds, $6000 General Tazri builds, $5000 Teferi, Temporal Archmage builds, and tell me this deck will win a game against them.

You are wrong, not based on my own opinion, but with playtesting a deck that supposedly wins by turn 10 at the slowest, goldfishing it.

I have yet to see another deck in ALL OF CEDH, that goldfishes a win, or complete stax lock down past turn 6, ever.


Your deck is misleading by using the hub "competitive", all I want is for you to remove it.

zwells3 on Paradox Scepter Oona

2 months ago

Thanks, Pabs4444 and DrkNinja! I appreciate the love. My land base is nearly where I'd like it... will add an Inventors' Fair eventually (thanks for the suggestion, Pabs4444), and would love to pick up a beat up Underground Sea on some sort of sale, but we'll see. Any other land suggestions? I've played with Tolaria West and various other utility lands, but find myself coming back to mostly basics for their simple yet "turn played tappable" goodness. My playgroup gets reasonably screwed with a well-timed Back to Basics which really encourages me to stick with a high proportion of basics.

Thanks!

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