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Collective Nightmare

Card details, tags, similarity scores, and printings.

Collective Nightmare

Instant

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.) Target creature gets -3/-3 until end of turn.

$0.15

Commander: LegalModern: Legal

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Tags and classifications

Card attributes are distinct from inferred themes. AI themes and predicted tags are suggestions, not rules text; check the card before relying on a surprising classification.

Ability tags

Passive Static

Mana costs

× 1

Color identity

B

Keyword tags

Convoke

Mana value

Mana value 3

Timing tags

Timing Instant

Type tags

Instant

Similar cards

Showing 1–24 of 34,604 candidates

These rankings describe text and metadata resemblance, not synergy, win rates, or claims that a card counters yours.

Mob

Score 0.888unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Convoke, Passive Static · Same color identity

Score details
Text (embedding)
0.924
Tags and themes
1.000
Color identity
1.000
Mana cost
0.333

Shared tags

InstantConvokePassive StaticTiming Instant

Grim Affliction

Score 0.860unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.899
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Grave Choice

Score 0.850unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.883
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Rise of the Dread Marn

Score 0.845unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.875
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Cruel Finality

Score 0.845unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.875
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Breach

Score 0.844unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.907
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

To the Slaughter

Score 0.843unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.872
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Neutralize the Guards

Score 0.842unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.870
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Butcher's Glee

Score 0.842unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.869
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Induce Despair

Score 0.839unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.899
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Afflict

Score 0.838unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.897
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Corpse Dance

Score 0.836unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.859
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Drag Down

Score 0.835unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Passive Static, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.859
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Overkill

Score 0.835unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.891
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Moment of Defiance

Score 0.834unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.891
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Tar Snare

Score 0.834unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.890
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Grotesque Demise

Score 0.833unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.889
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Splendid Agony

Score 0.833unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.888
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Sick and Tired

Score 0.833unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.888
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Reaver Ambush

Score 0.832unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.887
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Eye to Eye

Score 0.831unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.886
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Nightmarish End

Score 0.831unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.885
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Feeding Frenzy

Score 0.829unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.882
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Withering Torment

Score 0.829unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: Instant, Timing Instant · Same color identity · Matching mana cost

Score details
Text (embedding)
0.882
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant
How ranking works

Balanced: 0.60*text + 0.20*tags + 0.10*color + 0.10*cost. Outputs are unitless rankings, not percentages or probabilities. Most similar shows the highest scores; Typical overlap is nearest the catalog median (0.550); Least similar shows the lowest scores.

Text uses cosine resemblance (−1 to 1) between 384-number embeddings when available, or lexical fallback otherwise. Tags use Jaccard overlap of approved tags and AI themes, excluding predicted tags and separately scored color/cost tags. Color compares W/U/B/R/G identity. Mana cost combines mana-value proximity, 1 / (1 + the difference), with mana-symbol overlap. Tags, color, and cost range from 0 to 1.

Model: bge-small-en-v1.5. 34,605 of 34,605 catalog cards currently have embeddings.

Potential relationships

1,031 of 34,605 canonical cards have AI-derived resource labels. Label model: gpt-5.6-luna.

This card is missing AI-derived resource labels, so potential synergies and answers are unavailable. No text or predicted-tag inference is used.

About relationship labels

These labels are AI-derived resource matches, not reviewed or rules-validated interactions. Check deck legality, color identity, costs, timing, restrictions, and the cards themselves.

Printings
SetLanguageCollectorReleasedRarityPrice
March of the Machineen952023-04-21uncommon$0.15
March of the Machineit952023-04-21uncommon—
March of the Machinede952023-04-21uncommon—
March of the Machinezhs952023-04-21uncommon—
March of the Machinees952023-04-21uncommon—
March of the Machineja952023-04-21uncommon—
March of the Machinefr952023-04-21uncommon—
March of the Machinept952023-04-21uncommon—