Deep Clue Sea Precon Upgrade: 30 Budget Swaps for $18.18

Upgraded Decklist

Your upgraded Deep Clue Sea.

100 / 100 cards · 30 new

Creatures 28$50.88

Creatures continued

Planeswalkers 1$0.51

1Tezzeret, Betrayer of Flesh$0.51

Instants 9$6.14

Sorceries 4$5.70

Artifacts 11$9.39

Enchantments 9$15.81

Lands 37$13.02

Lands continued

Upgrade Guide

Swap these cards.

10 swaps · All suggested swaps

Cards to swapMaximum per added card · USD

About 21% of the recorded Morska, Undersea Sleuth decks are this precon almost unchanged.

All suggested swaps: 30 swaps. No further swaps meet the model’s play-rate, role, and price criteria.

Spells 22

$13.69

Spells to add, each with the card it replaces
#	Add	Price	Take out	Your call
1	Tamiyo's Journal Card Draw synergy	$0.65	Ransom Note Card Draw	Skip the new card Keep the old card
2	Five Hundred Year Diary Ramp synergy	$0.37	Serene Sleuth Card Draw	Skip the new card Keep the old card
3	Officious Interrogation Card Draw synergy	$0.20	Sophia, Dogged Detective Card Draw	Skip the new card Keep the old card
4	Kellan, Inquisitive Prodigy // Tail the Suspect Ramp synergy	$0.33	Magnifying Glass Ramp	Skip the new card Keep the old card
5	Cyberdrive Awakener Theme/Synergy synergy	$1.65	Killer Service Theme/Synergy	Skip the new card Keep the old card
6	Path to Exile Ramp synergy staple	$0.71	Aerial Extortionist Card Draw	Skip the new card Keep the old card
7	Rise and Shine Theme/Synergy synergy	$0.36	Hornet Queen Theme/Synergy	Skip the new card Keep the old card
8	Piper Wright, Publick Reporter Card Draw synergy	$0.35	Nadir Kraken Card Draw	Skip the new card Keep the old card
9	Lavinia, Foil to Conspiracy Ramp synergy	$1.45	Organic Extinction Board Wipes	Skip the new card Keep the old card
10	Beast Within Tgt Removal synergy staple fills a gap	$0.53	Hydroid Krasis Card Draw	Skip the new card Keep the old card
11	Alquist Proft, Master Sleuth Card Draw synergy	$0.27	Selvala, Explorer Returned Ramp	Skip the new card Keep the old card
12	Dispatch Tgt Removal synergy fills a gap	$0.40	Confirm Suspicions Card Draw	Skip the new card Keep the old card
13	Farseek Ramp synergy staple	$0.45	Follow the Bodies Card Draw	Skip the new card Keep the old card
14	Martha Jones Card Draw synergy	$0.34	Innocuous Researcher Card Draw	Skip the new card Keep the old card
15	Generous Gift Tgt Removal synergy staple fills a gap	$0.91	Finale of Revelation Card Draw	Skip the new card Keep the old card
16	Arcane Denial Card Draw synergy staple	$1.85	Graf Mole Theme/Synergy	Skip the new card Keep the old card
17	Cultivate Ramp synergy staple	$0.39	Wavesifter Card Draw	Skip the new card Keep the old card
18	Private Eye Theme/Synergy synergy	$0.19	Thought Monitor Card Draw	Skip the new card Keep the old card
19	Duggan, Private Detective Card Draw synergy	$0.29	Fumigate Board Wipes	Skip the new card Keep the old card
20	Deduce Card Draw synergy	$0.18	Azorius Signet Ramp	Skip the new card Keep the old card
21	Yotian Dissident Theme/Synergy synergy	$0.28	Simic Signet Ramp	Skip the new card Keep the old card
22	Swiftfoot Boots Protection synergy staple fills a gap	$1.54	Koma, Cosmos Serpent Protection	Skip the new card Keep the old card

Lands 8

$4.49

Lands to add, each with the card it replaces
#	Add	Price	Take out	Your call
1	Rogue's Passage Lands synergy staple	$0.34	Temple of the False God Lands	Skip the new card Keep the old card
2	Glacial Fortress Lands synergy staple	$0.19	Krosan Verge Lands	Skip the new card Keep the old card
3	Hinterland Harbor Lands synergy staple	$0.25	Secluded Steppe Lands	Skip the new card Keep the old card
4	Dreamroot Cascade Lands synergy staple	$0.84	Island Lands	Skip the new card Keep the old card
5	Deserted Beach Lands synergy staple	$1.35	Island Lands	Skip the new card Keep the old card
6	Yavimaya Coast Lands synergy staple	$0.31	Forest Lands	Skip the new card Keep the old card
7	Overgrown Farmland Lands synergy staple	$0.93	Island Lands	Skip the new card Keep the old card
8	Sunpetal Grove Lands synergy staple	$0.28	Forest Lands	Skip the new card Keep the old card

To change a swap, select another addition or keep the proposed cut, then update suggestions. Open each card to read its abilities.

Lands. 37 lands, as sold and after these swaps; typical builds run 37. Change the number of basics in the deck workspace.

Reset to the default upgrade

Compare deck statistics

What the upgrade changes.

The deck as sold compared with the upgraded deck
Statistic	As sold	Upgraded
Singles value	$98.62	$102.13
Average mana value	3.70	3.29
Game Changers	1	1
Combos	0	1
Deck match	93%	89%

Mana curve

Mana value 0: 0 as sold, 0 upgraded
Mana value 1: 3 as sold, 4 upgraded
Mana value 2: 16 as sold, 19 upgraded
Mana value 3: 14 as sold, 15 upgraded
Mana value 4: 13 as sold, 14 upgraded
Mana value 5: 7 as sold, 4 upgraded
Mana value 6: 4 as sold, 5 upgraded
Mana value 7+: 6 as sold, 2 upgraded

Each pair of bars is the deck as sold (gray) and the upgraded deck (blue). The curve and the average cover Morska, Undersea Sleuth and every nonland card. Game Changers are the cards on the official Commander Game Changers list. Combos are the two- to four-card combos from Commander Spellbook that the 100 cards hold every piece of. Deck match says how much of what this commander’s decks usually play the list captures.

Roles

Cards per role: as sold, typical for this commander, and upgraded
Role	As sold	Typical	Upgraded
Lands	37	37	37
Ramp	14	16	16
Card draw	29	25	25
Targeted removal	1	2	4
Board wipes	3	2	1
Counterspells	0	1	0
Protection	2	3	2
Tutors	0	0	0

Typical is the median count across this commander’s decks. Each card counts toward its main role only. A swap never takes a role below 80% of its typical count unless the new card fills the same role.