---
target_card: Underground Sea
mana_cost: ""
type_line: "Land — Island Swamp"
algorithm: "4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings"
canonical_url: https://avascry.com/similar/underground-sea
json_api: https://avascry.com/similar/underground-sea.json
---

# Cards Similar & Synergistic to Underground Sea

- **Target Card:** [Underground Sea](https://avascry.com/printing/underground-sea-sum) (Land — Island Swamp) ``
- **Algorithm:** 4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings
- **JSON API:** https://avascry.com/similar/underground-sea.json

## Top 31 Synergistic Matches

1. [**Underground River**](https://avascry.com/printing/underground-river-6ed) `N/A` — *Land*
2. [**Contaminated Aquifer**](https://avascry.com/printing/contaminated-aquifer-dmu) `N/A` — *Land — Island Swamp*
3. [**Sunken Hollow**](https://avascry.com/printing/sunken-hollow-clb) `N/A` — *Land — Island Swamp*
4. [**Gloomlake Verge**](https://avascry.com/printing/gloomlake-verge-pdsk) `N/A` — *Land*
5. [**Rootwater Depths**](https://avascry.com/printing/rootwater-depths-tmp) `N/A` — *Land*
6. [**Darkwater Catacombs**](https://avascry.com/printing/darkwater-catacombs-plst) `N/A` — *Land*
7. [**Sunken Ruins**](https://avascry.com/printing/sunken-ruins-fic) `N/A` — *Land*
8. [**Submerged Boneyard**](https://avascry.com/printing/submerged-boneyard-aer) `N/A` — *Land*
9. [**Tainted Isle**](https://avascry.com/printing/tainted-isle-pip) `N/A` — *Land*
10. [**Waterveil Cavern**](https://avascry.com/printing/waterveil-cavern-chk) `N/A` — *Land*
11. [**Drowned Catacomb**](https://avascry.com/printing/drowned-catacomb-pip) `N/A` — *Land*
12. [**Ice Tunnel**](https://avascry.com/printing/ice-tunnel-khm) `N/A` — *Snow Land — Island Swamp*
13. [**Watery Grave**](https://avascry.com/printing/watery-grave-clu) `N/A` — *Land — Island Swamp*
14. [**Island**](https://avascry.com/printing/island-eld) `N/A` — *Basic Land — Island*
15. [**Hidden Lair**](https://avascry.com/printing/hidden-lair-msh) `N/A` — *Land*
16. [**Swamp**](https://avascry.com/printing/swamp-jmp) `N/A` — *Basic Land — Swamp*
17. [**Bayou**](https://avascry.com/printing/bayou-leb) `N/A` — *Land — Swamp Forest*
18. [**River of Tears**](https://avascry.com/printing/river-of-tears-who) `N/A` — *Land*
19. [**Undercity Sewers**](https://avascry.com/printing/undercity-sewers-pza) `N/A` — *Land — Island Swamp*
20. [**Shipwreck Marsh**](https://avascry.com/printing/shipwreck-marsh-who) `N/A` — *Land*
21. [**Salt Marsh**](https://avascry.com/printing/salt-marsh-8ed) `N/A` — *Land*
22. [**Choked Estuary**](https://avascry.com/printing/choked-estuary-msc) `N/A` — *Land*
23. [**Sulfurous Mire**](https://avascry.com/printing/sulfurous-mire-khm) `N/A` — *Snow Land — Swamp Mountain*
24. [**Snowfield Sinkhole**](https://avascry.com/printing/snowfield-sinkhole-clb) `N/A` — *Snow Land — Plains Swamp*
25. [**Scrubland**](https://avascry.com/printing/scrubland-me4) `N/A` — *Land — Plains Swamp*
26. [**Snow-Covered Swamp**](https://avascry.com/printing/snow-covered-swamp-sld) `N/A` — *Basic Snow Land — Swamp*
27. [**Badlands**](https://avascry.com/printing/badlands-me4) `N/A` — *Land — Swamp Mountain*
28. [**Haunted Mire**](https://avascry.com/printing/haunted-mire-dmu) `N/A` — *Land — Swamp Forest*
29. [**Dismal Backwater**](https://avascry.com/printing/dismal-backwater-tdm) `N/A` — *Land*
30. [**Desolate Mire**](https://avascry.com/printing/desolate-mire-pip) `N/A` — *Land*
31. [**Sunlit Marsh**](https://avascry.com/printing/sunlit-marsh-fic) `N/A` — *Land — Plains Swamp*