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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

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

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Score 0.828unitless 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)
0.847
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Blot Out

Score 0.828unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.879
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Fevered Strength

Score 0.827unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.879
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Ob Nixilis's Cruelty

Score 0.827unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.879
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Scales of Shale

Score 0.827unitless 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)
0.845
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Grim Return

Score 0.827unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.878
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Vona's Hunger

Score 0.827unitless 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)
0.845
Tags and themes
0.600
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Reverent Howl

Score 0.827unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.878
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Soul Shatter

Score 0.826unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.877
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Unmake the Graves

Score 0.824unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.885
Tags and themes
0.800
Color identity
1.000
Mana cost
0.333

Shared tags

InstantConvokePassive StaticTiming Instant

Body Count

Score 0.824unitless 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)
0.873
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Hapato's Might

Score 0.824unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.873
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Necrobite

Score 0.823unitless 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
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Kor Dirge

Score 0.823unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.872
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Rend Flesh

Score 0.823unitless formula ranking

Instant — Arcane · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.871
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Vanquish the Weak

Score 0.822unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.870
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Vraska's Fall

Score 0.822unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.870
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Dark Banishing

Score 0.821unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.869
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Debt to the Kami

Score 0.821unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.868
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Foolish Fate

Score 0.820unitless 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)
0.867
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantPassive StaticTiming Instant

Pharika's Libation

Score 0.820unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.867
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Gravepurge

Score 0.819unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.866
Tags and themes
0.500
Color identity
1.000
Mana cost
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InstantTiming Instant

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Score 0.819unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.865
Tags and themes
0.500
Color identity
1.000
Mana cost
1.000

Shared tags

InstantTiming Instant

Corpse Lunge

Score 0.818unitless formula ranking

Instant · Mana cost: · Color identity: B

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

Score details
Text (embedding)
0.864
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—