Underground Sea

Land — Island Swamp

({T}: Add {U} or {B}.)

Legality

Format	Legality
1v1 Commander	Legal
Archenemy	Legal
Block Constructed	Legal
Canadian Highlander	Legal
Casual	Legal
Commander / EDH	Legal
Commander: Rule 0	Legal
Custom	Legal
Duel Commander	Legal
Freeform	Legal
Highlander	Legal
Legacy	Legal
Leviathan	Legal
Limited	Legal
Oathbreaker	Legal
Oldschool 93/94	Legal
Planar Constructed	Legal
Planechase	Legal
PreDH	Legal
Quest Magic	Legal
Tiny Leaders	Legal
Vanguard	Legal
Vintage	Legal

Discussion (48)

indieinside on Umbris Fear Manifest

2 months ago

I would start with your mana base. I am going to assume we can’t afford cards like Underground Sea and Polluted Delta. But, maybe in the $10 or less range for duals that don’t enter tapped. I’m not a fan of tapped lands. Looks like you got it. Just thought I would mention a few others.

Darkwater Catacombs

Morphic Pool

Sunken Ruins

trippy_mcfly on Cumly Cube

4 months ago

Introducing Cumly Cube 1.3! Two years ago, Cumly Cube was updated to Cumly Cube 1.2, creating a balanced cube and wonderful play experience for all involved. Despite these changes, there remained some minor flaws in the card pool. I am now pleased to announce that, after extensive research and design, Cumly Cube has reached a final form. No card is too powerful. No card is too weak. Synergy is abundant. Both the draft and play experiences are dynamic, exciting, and new. There will be no more major updates to Cumly Cube 1.

120 cards have been removed, and 120 cards have been added. Here are the changes, provided with brief justifications:

REMOVED:

ARTIFACT

1. Everflowing Chalice: mana rocks should cost 3 or have a drawback
2. Glass of the Guildpact: too weak
3. Heraldic Banner: encouraged mono-colored decks
4. Illuminated Folio: too weak
5. Jayemdae Tome: too weak
6. Loreseeker's Stone: too weak
7. Mind Stone: mana rocks should cost 3 or have a drawback
8. Null Rod: too much of a hate card
9. Pithing Needle: too powerful with Urza's Saga
10. Pyromancer's Goggles: too narrow
11. Retrofitter Foundry: too powerful with Urza's Saga

CREATURE

1. Bomat Courier: too powerful against slow starts
2. Deathpact Angel: creates a Cleric token, not a supported creature type
3. Dimir Cutpurse: too powerful
4. Elves of Deep Shadow: too obvious of a choice as a cumly
5. Golos, Tireless Pilgrim: too powerful
6. Hostage Taker: too powerful
7. Kalamax, the Stormsire: too powerful
8. Loyal Retainers: too obvious of a choice as a cumly
9. Monastery Mentor: too powerful
10. Moonveil Dragon: pumping the team makes for anticlimactic endings
11. Murktide Regent: we’ve seen enough of this card already in other formats
12. Ornithopter of Paradise: too obvious of a choice as a cumly
13. Phantom Tiger: too weak
14. Risen Reef: too powerful
15. Shadrix Silverquill: creates Inkling tokens, not a supported creature type
16. Tatyova, Benthic Druid: too powerful
17. Thraben Inspector: we’ve seen enough of this card already in other formats
18. Toxrill, the Corrosive: creates Slug tokens, not a supported creature type

ENCHANTMENT

1. Alpha Authority: hexproof makes for less interesting games
2. Favorable Winds: too weak
3. Offspring's Revenge: too narrow
4. Pernicious Deed: too powerful of a board wipe
5. Rally the Ranks: too weak
6. Song of Freyalise: too typical a card for green

LAND (types are grouped together in this list)

1. Tolarian Academy: too powerful
2. Arid Mesa: mana-fixing should not be so easy in Cumly Cube
3. Bloodstained Mire: mana-fixing should not be so easy in Cumly Cube
4. Flooded Strand: mana-fixing should not be so easy in Cumly Cube
5. Marsh Flats: mana-fixing should not be so easy in Cumly Cube
6. Misty Rainforest: mana-fixing should not be so easy in Cumly Cube
7. Polluted Delta: mana-fixing should not be so easy in Cumly Cube
8. Scalding Tarn: mana-fixing should not be so easy in Cumly Cube
9. Verdant Catacombs: mana-fixing should not be so easy in Cumly Cube
10. Windswept Heath: mana-fixing should not be so easy in Cumly Cube
11. Wooded Foothills: mana-fixing should not be so easy in Cumly Cube
12. Badlands: mana-fixing should not be so easy in Cumly Cube
13. Bayou: mana-fixing should not be so easy in Cumly Cube
14. Plateau: mana-fixing should not be so easy in Cumly Cube
15. Savannah: mana-fixing should not be so easy in Cumly Cube
16. Scrubland: mana-fixing should not be so easy in Cumly Cube
17. Taiga: mana-fixing should not be so easy in Cumly Cube
18. Tropical Island: mana-fixing should not be so easy in Cumly Cube
19. Tundra: mana-fixing should not be so easy in Cumly Cube
20. Underground Sea: mana-fixing should not be so easy in Cumly Cube
21. Volcanic Island: mana-fixing should not be so easy in Cumly Cube
22. Hissing Quagmire: creature lands are too versatile and discourage disciplined drafting
23. Lavaclaw Reaches: creature lands are too versatile and discourage disciplined drafting
24. Lumbering Falls: creature lands are too versatile and discourage disciplined drafting
25. Shambling Vent: creature lands are too versatile and discourage disciplined drafting
26. Needle Spires: creature lands are too versatile and discourage disciplined drafting
27. Raging Ravine: creature lands are too versatile and discourage disciplined drafting
28. Stirring Wildwood: creature lands are too versatile and discourage disciplined drafting
29. Wandering Fumarole: creature lands are too versatile and discourage disciplined drafting

INSTANT

1. Abnormal Endurance: too typical a card for black
2. Aerial Predation: too narrow
3. Alchemist's Gift: too weak
4. Arbor Armament: too weak
5. Autumn's Veil: too narrow
6. Betrayal of Flesh: too weak
7. Bladebrand: too typical a card for black
8. Brainstorm: we’ve seen enough of this card already in other formats
9. Cathartic Pyre: too much utility for an instant
10. Comet Storm: one-sided board wipes need to be focused on creature type
11. Consider: too typical a card for blue
12. Crippling Chill: too typical a card for blue
13. Crush: spot artifact removal is not to be part of Cumly Cube
14. Dawn Charm: other cards in Cumly Cube fill this role better
15. Dive Down: hexproof makes for less interesting games
16. Divine Offering: spot artifact removal is not to be part of Cumly Cube
17. Dragon's Fire: too typical a card for red
18. Electrify: too typical a card for red
19. Fell the Pheasant: too narrow
20. Gainsay: too narrow
21. Gut Shot: too weak
22. Heroic Intervention: other cards in Cumly Cube fill this role better
23. Hold the Line: too narrow
24. Into the Core: spot artifact removal is not to be part of Cumly Cube
25. Lash of Thorns: too weak
26. Make Your Mark: too weak
27. Opt: too typical a card for blue
28. Overload: spot artifact removal is not to be part of Cumly Cube
29. Pitfall Trap: too narrow
30. Repulse: too typical a card for blue
31. Scrap: spot artifact removal is not to be part of Cumly Cube
32. Seedtime: too narrow
33. Shatter: spot artifact removal is not to be part of Cumly Cube
34. Smash: spot artifact removal is not to be part of Cumly Cube
35. Smashing Success: spot artifact removal is not to be part of Cumly Cube
36. Smite: too narrow
37. Turn to Frog: turns a creature into a Frog, not a supported creature type
38. Unsummon: other cards in Cumly Cube fill this role better

SORCERY

1. Blasphemous Act: too typical a card for red
2. Chart a Course: too much utility
3. Cleansing Wildfire: too much utility
4. Cultivate: too typical a card for green
5. Disentomb: too typical a card for black
6. From the Ashes: too narrow
7. Funeral Rites: too much utility
8. Gitaxian Probe: too typical a card for blue
9. Necromantic Summons: too typical a card for black
10. Nighthaze: other cards in Cumly Cube fill this role better
11. Persist: too typical a card for black
12. Pirate's Prize: too much utility
13. Ponder: too much utility
14. Reanimate: too typical a card for black
15. Recover: other cards in Cumly Cube fill this role better
16. Serum Visions: too typical a card for blue
17. Spitting Earth: too typical a card for red
18. Thoughtcast: too typical a card for blue

ADDED:

ARTIFACT

1. Coat of Arms: encourages building around creature types
2. Patchwork Banner: encourages building around creature types

CREATURE

1. Arahbo, the First Fang: supports the Avatar and Cat creature types
2. Avatar of the Resolute: supports the Avatar creature type
3. Autonomous Assembler: supports the Assembly-worker creature type
4. Bag End Porter: supports the Dwarf creature type
5. Breya, Etherium Shaper: supports the Human and Thopter creature types
6. Captain Storm, Cosmium Raider: supports the Human and Pirate creature types
7. Captivating Unicorn: supports the Unicorn creature type and supports enchantment decks
8. Centaur Battlemaster: supports the Centaur creature type and functions as a strong payoff for prowess decks
9. Chronicler of Heroes: supports the Centaur creature type
10. Conclave Cavalier: supports the Centaur and Elf creature types
11. Conclave Mentor: supports the Centaur creature type
12. Crosis, the Purger: supports the Dragon creature type
13. Fear of Exposure: supports the Nightmare creature type and supports enchantment decks
14. Ghostly Changeling: supports all creature synergy decks
15. Gimli of the Glittering Caves: supports the Dwarf creature type
16. Glissa Sunseeker: supports the Elf creature type
17. Graveshifter: supports all creature synergy decks
18. Gwenna, Eyes of Gaea: supports the Elf creature type
19. Haunt of the Dead Marshes: supports the Elf and Nightmare creature types
20. He Who Hungers: supports the Spirit creature type
21. Heedless One: supports the Avatar and Elf creature types
22. Jungle Creeper: supports the Elemental creature type
23. Jungle Delver: supports the Merfolk creature type
24. Kataki, War's Wage: supports the Spirit creature type and functions as artifact hate
25. Keiga, the Tide Star: supports the Dragon and Spirit creature types
26. Kiora's Follower: supports the Merfolk creature type
27. Kumena, Tyrant of Orazca: supports the Merfolk creature type
28. Lagonna-Band Trailblazer: supports the Centaur creature type
29. Marwyn, the Nurturer: supports the Elf creature type
30. Master Skald: supports the Dwarf creature type
31. Mine Layer: supports the Dwarf creature type
32. Neighborhood Guardian: supports the Unicorn creature type
33. Promised Kannushi: supports the Human and Spirit creature types
34. Realmwalker: supports all creature synergy decks
35. Reveka, Wizard Savant: supports the Dwarf creature type
36. Seraphic Steed: supports the Angel and Unicorn creature types
37. Soul of Zendikar: supports the Avatar and Beast creature types
38. Steadfast Unicorn: supports the Unicorn creature type
39. Stingmoggie: supports the Elemental creature type and functions as artifact hate
40. Sygg, River Cutthroat: supports the Merfolk creature type
41. Vineshaper Mystic: supports the Merfolk creature type
42. Wistful Selkie: supports the Merfolk creature type
43. Yargle and Multani: supports the Elemental and Spirit creature types
44. Zacama, Primal Calamity: supports the Dinosaur creature type

ENCHANTMENT

1. Aura of Silence: functions as artifact and enchantment hate
2. Aura ShardsGC: functions as artifact and enchantment hate
3. Blessed Sanctuary: supports the Unicorn creature type
4. Corrosion: functions as artifact hate
5. Embargo: interesting prison piece for stasis decks
6. Font of Fortunes: card advantage at a fair price for Cumly Cube
7. Gate to Phyrexia: functions as artifact hate and supports the niche but possible sacrifice deck
8. Impending Disaster: a useful piece for aggressive decks or niche graveyard decks
9. Shared Animosity: supports all creature synergy decks

LAND (types are grouped together in this list)

1. Drowned Catacomb: completing the full set of check lands
2. Glacial Fortress: completing the full set of check lands
3. Hinterland Harbor: completing the full set of check lands
4. Sulfur Falls: completing the full set of check lands
5. Cascade Bluffs: completing the full set of filter lands
6. Graven Cairns: completing the full set of filter lands
7. Mystic Gate: completing the full set of filter lands
8. Sunken Ruins: completing the full set of filter lands
9. Wooded Bastion: completing the full set of filter lands
10. Darkwater Catacombs: completing the full set of Odyssey filter lands
11. Desolate Mire: completing the full set of Odyssey filter lands
12. Ferrous Lake: completing the full set of Odyssey filter lands
13. Fire-Lit Thicket: completing the full set of Odyssey filter lands
14. Flooded Grove: completing the full set of Odyssey filter lands
15. Overflowing Basin: completing the full set of Odyssey filter lands
16. Skycloud Expanse: completing the full set of Odyssey filter lands
17. Sunscorched Divide: completing the full set of Odyssey filter lands
18. Viridescent Bog: completing the full set of Odyssey filter lands

INSTANT

1. Accelerate: supports prowess decks
2. And They Shall Know No Fear: supports all creature synergy decks
3. Artifact Mutation: functions as artifact hate and supports the Saproling creature type
4. Bandage: supports prowess decks and is also funny
5. Brokers Charm: charms are an important part of Cumly Cube
6. Charge Through: supports prowess decks
7. Cremate: supports prowess decks
8. Mirrodin Avenged: supports prowess decks
9. Poison the Blade: supports prowess decks and offers deathtouch in green instead of its typical color, black
10. Pressure Point: supportsli prowess decks and offers tapping in white instead of its typical color, blue
11. Steady Progress: supports prowess decks as well as slower proliferate decks
12. Sugar Rush: supports prowess decks and offers power boost in black instead of its typical color, red
13. Treacherous Greed: supports the niche but possible sacrifice deck
14. Turf Wound: a strange tempo card that fits the ethos of Cumly Cube
15. Warriors' Lesson: supports prowess decks and might end up as green Ancestral Recall

SORCERY

1. Altar of Bone: supports the niche but possible sacrifice deck
2. Aphetto Dredging: supports all creature synergy decks
3. Apocalypse: total game resets are an important part of Cumly Cube, because you end up playing more Cumly Cube!
4. Ashen Powder: a more situational and odd piece for reanimator decks
5. Blood for Bones: a more situational and odd piece for reanimator decks
6. Breath of Life: offers reanimation in white instead of its typical color, black
7. Broken Bond: functions as artifact and enchantment hate yet also ramps
8. Channel the Suns: a strange yet useful mana-fixer. Out with fetch lands, in with sorcery WUBRG!
9. Cloak of Feathers: supports prowess decks
10. Crippling Fear: supports all creature synergy decks
11. False Dawn: supports prowess decks and might offer mana-fixing in niche situations? Even if this card is pretty useless, it screams Cumly Cube
12. Grim Tutor: tutoring is a small part of Cumly Cube but very important in the right decks
13. Growth Spasm: offers ramp, mana-fixing, and supports the Eldrazi creature type
14. Hymn of Rebirth: offers reanimation in green and white instead of its typical color, black
15. Ice Storm: land destruction is a small part of Cumly Cube but a necessary balance, and not usually in green
16. Jace's Triumph: there are Jace planeswalkers in Cumly Cube
17. Mana Vapors: a strange tempo card that fits the ethos of Cumly Cube
18. Many Partings: offers mana-fixing and food
19. Migratory Route: offers mana-fixing and supports the Bird creature type
20. Obzedat's Aid: offers reanimation in black and white
21. Ordered Migration: supports the Bird creature type
22. Raise the Palisade: supports all creature synergy decks
23. Resourceful Return: a more situational and odd piece for black graveyard decks and artifact decks
24. Ribbons of Night: offers direct damage in black instead of its typical color, red
25. Rise of the Witch-king: a more situational and odd piece for reanimator decks
26. Riveteers Confluence: similar to a charm
27. Safewright Quest: offers slight mana-fixing in green and white
28. Solve the Equation: tutoring is a small part of Cumly Cube but very important in the right decks
29. Sweep the Skies: supports the Thopter creature type
30. Temporal Machinations: supports artifact decks
31. Unnatural Restoration: supports proliferate decks
32. Urborg Repossession: a more situational and odd piece for black graveyard decks

Bishoprage on The Queen's Egg

5 months ago

Hi Mortlocke thank you for this awesome guide. I'm just getting into EDH and have become obsessed with Silvers! I'm slowly acquiring all the cards and putting together my Silver's deck. I'm sorry if this isn't the right place for this question but could you recommend any replacements for the following cards? I included my thoughts but I have no where near the knowledge of you and this community.

• Badlands
• Bayou
• Plateau
• Savannah
• Scrubland
• Taiga
• Tropical Island
• Tundra
• Underground Sea
• Volcanic Island

I was thinking the cycle triomes, which would be an even swap of 10 for 10 and can still be fetched.

• Gaea's CradleGC -> maybe just another utility land or interaction like Flusterstorm
• Wheel of Fortune -> maybe Windfall
• Mox DiamondGC -> maybe Darksteel Ingot or Patchwork Banner

Much love and thanks for this awesome guide!

capwner on Aug 26 ban announcement

1 year ago

Grief banned in legacy is actually crazy but so so welcome. Looks like you're gonna need to find new homes for all those Underground Seas, silly scammers :^)

legendofa on Seeking Advice for Lazav., Dimrir …

1 year ago

Welcome to the club, Danutercisd!

For being a first deck, I'm impressed to see the Mana Crypt, Cyclonic Rift, Fierce Guardianship, The Meathook Massacre, Underground Sea... I'm going to guess that budget isn't a major constraint here.

One of my pet cards for this sort of thing is Geth, Lord of the Vault. It offers milling, reanimation theft for creatures and artifacts, and a pretty big evasive body.

If you like instant-win combos, both Bloodchief Ascension and Duskmantle Guildmage set up full-deck milling and lots of damage with the Mindcrank in the deck.

Another suggestion is to diversify your copy/theft effects. There's a lot of ways to copy opponents' creatures, but you can take them directly with Control Magic, Beguiler of Wills, and similar effects, steal and copy spells with Talent of the Telepath or Twincast, or yank something from their deck with Praetor's Grasp. You opponents are probably going to be doing things beside throwing creatures around, and being able to react to different threats and take advantage of different opportunities is always good.

Balaam__ on Faeded

1 year ago

Very solid for a first attempt at deckbuilding. You have a clear grasp of what you’d like the deck to do, and a capable strategy to get there (which is arguably the most important part of deckbuilding).

That said, Legacy is a fast and brutal format, so depending on the specific context of where you’d play this, results may vary. For example, dual lands costing thousands of dollars are typical in sanctioned play, and provide an overwhelming advantage versus any other type of land. It’s a case of, ’If you have them, you need to run them’.

Sideboards are also tuned to a higher-than-usual degree of efficacy, with specific answers for specific problems.

If this is for friendly matches only, then most of the above can be disregarded, although maybe consider looking into some countermagic since you’re in blue.

KablamoBoom on What is Your Opinion of …

2 years ago

Used to think proxies were a form of cheating, and swore not to play with anybody who proxied. I first warmed up to them when a friend ran some for cards he owned, just, didn't want to bother re-sleeving every single game. Made sense.

I changed my tune overnight after playing someone whose turn1 was something like Underground Sea, Mana Crypt, Grim Monolith in a "casual game with jank". Bullshit. I realized then and there that it was about money. I had considered proxies cheating because it invalidated the money I had invested into cardboard. But I was never going to own a Mana Crypt, or anything over fifteen bucks for that matter. Limiting the cards I allowed myself to run, in a meta where someone could drop $1000 on turn 1...that's just pay to win. That's not the kind of Magic I want to play.

Printed off several pages of cards that same night.

Gleeock on What is Your Opinion of …

2 years ago

As Gidgetimer suddenly looks emaciated & bug-eyed, he/she sneaks out that OG Underground Sea, strokes it, & calls it "my precious"... :) -- in order to show us a complete 180 degrees from that awesome comment :)

Honestly though, I think stock concern stuff is mostly just corporate/investor swordplay going on. Even if Hasbro miraculously tanked, or shut down the MtG cash cow, then in the age of recycled ideas & reboots there would be another company popping up with the MtG property in short order to turn record profits after the game was "gone" - It would be one "last" reunion tour type of thing. How often do you hear that now? :)