---
target_card: Collective Nightmare
mana_cost: "{2}{B}"
type_line: "Instant"
algorithm: "4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings"
canonical_url: https://avascry.com/similar/collective-nightmare
json_api: https://avascry.com/similar/collective-nightmare.json
---

# Cards Similar & Synergistic to Collective Nightmare

- **Target Card:** [Collective Nightmare](https://avascry.com/printing/collective-nightmare-mom) (Instant) `{2}{B}`
- **Algorithm:** 4096-dimensional Qwen 8B Cosine Similarity over 38,000 Oracle embeddings
- **JSON API:** https://avascry.com/similar/collective-nightmare.json

## Top 31 Synergistic Matches

1. [**Vote Out**](https://avascry.com/printing/vote-out-eoe) `{3}{B}` — *Sorcery*
2. [**Mob**](https://avascry.com/printing/mob-mh1) `{4}{B}` — *Instant*
3. [**Wicked Slumber**](https://avascry.com/printing/wicked-slumber-mom) `{3}{U}` — *Instant*
4. [**Overwhelm**](https://avascry.com/printing/overwhelm-m15) `{5}{G}{G}` — *Sorcery*
5. [**Pack's Favor**](https://avascry.com/printing/packs-favor-grn) `{2}{G}` — *Instant*
6. [**Gather Courage**](https://avascry.com/printing/gather-courage-plst) `{G}` — *Instant*
7. [**Devouring Light**](https://avascry.com/printing/devouring-light-j21) `{1}{W}{W}` — *Instant*
8. [**Lethal Scheme**](https://avascry.com/printing/lethal-scheme-fic) `{2}{B}{B}` — *Instant*
9. [**Pile On**](https://avascry.com/printing/pile-on-mom) `{3}{B}` — *Instant*
10. [**Collective Inferno**](https://avascry.com/printing/collective-inferno-ecl) `{3}{R}{R}` — *Enchantment*
11. [**Covenant of Blood**](https://avascry.com/printing/covenant-of-blood-m15) `{6}{B}` — *Sorcery*
12. [**Sundering Vitae**](https://avascry.com/printing/sundering-vitae-rav) `{2}{G}` — *Instant*
13. [**Endless Obedience**](https://avascry.com/printing/endless-obedience-znc) `{4}{B}{B}` — *Sorcery*
14. [**Unexpected Assistance**](https://avascry.com/printing/unexpected-assistance-ecl) `{3}{U}{U}` — *Instant*
15. [**Burning Sun's Fury**](https://avascry.com/printing/burning-suns-fury-mom) `{1}{R}` — *Instant*
16. [**Protective Response**](https://avascry.com/printing/protective-response-ecl) `{2}{W}` — *Instant*
17. [**Conclave's Blessing**](https://avascry.com/printing/conclaves-blessing-rav) `{3}{W}` — *Enchantment — Aura*
18. [**Root-Kin Ally**](https://avascry.com/printing/root-kin-ally-mm2) `{4}{G}{G}` — *Creature — Elemental Warrior*
19. [**Martyr's Soul**](https://avascry.com/printing/martyrs-soul-mh1) `{2}{W}` — *Creature — Spirit Soldier*
20. [**Chord of Calling**](https://avascry.com/printing/chord-of-calling-m15) `{X}{G}{G}{G}` — *Instant*
21. [**Bloodline Bidding**](https://avascry.com/printing/bloodline-bidding-pecl) `{6}{B}{B}` — *Sorcery*
22. [**Calamity of Cinders**](https://avascry.com/printing/calamity-of-cinders-blc) `{5}{R}{R}` — *Sorcery*
23. [**Meeting of Minds**](https://avascry.com/printing/meeting-of-minds-mom) `{3}{U}` — *Instant*
24. [**Referee Squad**](https://avascry.com/printing/referee-squad-plst) `{2}{U}` — *Creature — Homunculus*
25. [**Cut Short**](https://avascry.com/printing/cut-short-mom) `{2}{W}` — *Instant*
26. [**Crowd's Favor**](https://avascry.com/printing/crowds-favor-m15) `{R}` — *Instant*
27. [**Siege Wurm**](https://avascry.com/printing/siege-wurm-rvr) `{5}{G}{G}` — *Creature — Wurm*
28. [**City on Fire**](https://avascry.com/printing/city-on-fire-mom) `{5}{R}{R}{R}` — *Enchantment*
29. [**Feaster of Fools**](https://avascry.com/printing/feaster-of-fools-mh1) `{4}{B}{B}` — *Creature — Demon*
30. [**Worldsoul Colossus**](https://avascry.com/printing/worldsoul-colossus-grn) `{X}{G}{W}` — *Creature — Elemental*
31. [**Hour of Reckoning**](https://avascry.com/printing/hour-of-reckoning-mic) `{4}{W}{W}{W}` — *Sorcery*