---
target_card: Swimmer in Nightmares
mana_cost: "{2}{U}"
type_line: "Creature — Nightmare Merfolk"
algorithm: "4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings"
canonical_url: https://avascry.com/similar/swimmer-in-nightmares
json_api: https://avascry.com/similar/swimmer-in-nightmares.json
---

# Cards Similar & Synergistic to Swimmer in Nightmares

- **Target Card:** [Swimmer in Nightmares](https://avascry.com/printing/swimmer-in-nightmares-thb) (Creature — Nightmare Merfolk) `{2}{U}`
- **Algorithm:** 4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings
- **JSON API:** https://avascry.com/similar/swimmer-in-nightmares.json

## Top 31 Synergistic Matches

1. [**Ashiok's Skulker**](https://avascry.com/printing/ashioks-skulker-war) `{4}{U}` — *Creature — Nightmare*
2. [**Nightmare**](https://avascry.com/printing/nightmare-w17) `{5}{B}` — *Creature — Nightmare Horse*
3. [**Gray Harbor Merfolk**](https://avascry.com/printing/gray-harbor-merfolk-clb) `{1}{U}` — *Creature — Merfolk Rogue*
4. [**Drownyard Amalgam**](https://avascry.com/printing/drownyard-amalgam-dbl) `{4}{U}` — *Creature — Zombie Horror*
5. [**Blockade Runner**](https://avascry.com/printing/blockade-runner-mmq) `{3}{U}` — *Creature — Merfolk*
6. [**Expedition Lookout**](https://avascry.com/printing/expedition-lookout-mom) `{1}{U}` — *Creature — Merfolk Rogue*
7. [**Nimana Skitter-Sneak**](https://avascry.com/printing/nimana-skitter-sneak-znr) `{3}{B}` — *Creature — Human Rogue*
8. [**Herald of Secret Streams**](https://avascry.com/printing/herald-of-secret-streams-xln) `{3}{U}` — *Creature — Merfolk Warrior*
9. [**Ashiok, Nightmare Weaver**](https://avascry.com/printing/ashiok-nightmare-weaver-pio) `{1}{U}{B}` — *Legendary Planeswalker — Ashiok*
10. [**Deep-Sea Terror**](https://avascry.com/printing/deep-sea-terror-ori) `{4}{U}{U}` — *Creature — Serpent*
11. [**River Sneak**](https://avascry.com/printing/river-sneak-xln) `{1}{U}` — *Creature — Merfolk Warrior*
12. [**Merfolk Sovereign**](https://avascry.com/printing/merfolk-sovereign-e02) `{1}{U}{U}` — *Creature — Merfolk Noble*
13. [**Seafloor Stalker**](https://avascry.com/printing/seafloor-stalker-znr) `{2}{U}` — *Creature — Merfolk Rogue*
14. [**Inkfathom Witch**](https://avascry.com/printing/inkfathom-witch-pca) `{1}{U/B}` — *Creature — Merfolk Wizard*
15. [**Inkfathom Infiltrator**](https://avascry.com/printing/inkfathom-infiltrator-shm) `{U/B}{U/B}` — *Creature — Merfolk Rogue*
16. [**Saprazzan Raider**](https://avascry.com/printing/saprazzan-raider-mmq) `{2}{U}` — *Creature — Merfolk*
17. [**Fear of the Dark**](https://avascry.com/printing/fear-of-the-dark-dsk) `{4}{B}` — *Enchantment Creature — Nightmare*
18. [**Mist-Cloaked Herald**](https://avascry.com/printing/mist-cloaked-herald-rix) `{U}` — *Creature — Merfolk Warrior*
19. [**Fiend Artisan**](https://avascry.com/printing/fiend-artisan-sld) `{B/G}{B/G}` — *Creature — Nightmare*
20. [**Slithery Stalker**](https://avascry.com/printing/slithery-stalker-tor) `{1}{B}{B}` — *Creature — Nightmare Horror*
21. [**Giltgrove Stalker**](https://avascry.com/printing/giltgrove-stalker-rix) `{1}{G}` — *Creature — Merfolk Warrior*
22. [**Sewer Crocodile**](https://avascry.com/printing/sewer-crocodile-snc) `{5}{U}` — *Creature — Crocodile*
23. [**Deathmask Nezumi**](https://avascry.com/printing/deathmask-nezumi-sok) `{2}{B}` — *Creature — Rat Shaman*
24. [**Fear of Infinity**](https://avascry.com/printing/fear-of-infinity-dsk) `{1}{U}{B}` — *Enchantment Creature — Nightmare*
25. [**Abyssal Nocturnus**](https://avascry.com/printing/abyssal-nocturnus-gpt) `{1}{B}{B}` — *Creature — Horror*
26. [**Devourer of Memory**](https://avascry.com/printing/devourer-of-memory-thb) `{U}{B}` — *Creature — Nightmare*
27. [**Veilborn Ghoul**](https://avascry.com/printing/veilborn-ghoul-m13) `{4}{B}` — *Creature — Zombie*
28. [**Umbris, Fear Manifest**](https://avascry.com/printing/umbris-fear-manifest-sld) `{3}{U}{B}` — *Legendary Creature — Nightmare Horror*
29. [**Raiding Nightstalker**](https://avascry.com/printing/raiding-nightstalker-p02) `{2}{B}` — *Creature — Nightstalker*
30. [**Haunt of the Dead Marshes**](https://avascry.com/printing/haunt-of-the-dead-marshes-hoc) `{B}` — *Creature — Nightmare Elf*
31. [**Stallion of Ashmouth**](https://avascry.com/printing/stallion-of-ashmouth-plst) `{3}{B}` — *Creature — Nightmare Horse*