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Obsidian Fireheart

Card details, tags, similarity scores, and printings.

Obsidian Fireheart

Creature — Elemental

: Put a blaze counter on target land without a blaze counter on it. For as long as that land has a blaze counter on it, it has "At the beginning of your upkeep, this land deals 1 damage to you." (The land continues to burn after this creature has left the battlefield.)

$0.57

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

ActivatedTriggered

Mana costs

× 3

Creature kinds

Elemental

Color identity

R

Mana value

Mana value 4

Timing tags

Timing Sorcery

Type tags

Creature

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Score 0.455unitless formula ranking

Stickers · Mana cost: — · Color identity: Colorless

Shared traits: Timing Sorcery

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Score details
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Score 0.463unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
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Tags and themes
0.000
Color identity
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Mana cost
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No shared tags contributed to this comparison.

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Score 0.464unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
Text (embedding)
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Tags and themes
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Color identity
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Mana cost
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No shared tags contributed to this comparison.

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Score 0.464unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
Text (embedding)
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Tags and themes
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Color identity
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Mana cost
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No shared tags contributed to this comparison.

Barkchannel Pathway // Tidechannel Pathway

Score 0.464unitless formula ranking

Land // Land · Mana cost: — · Color identity: UG

Shared traits: No shared tags

Score details
Text (embedding)
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Tags and themes
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Color identity
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Mana cost
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No shared tags contributed to this comparison.

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Score 0.465unitless formula ranking

Artifact — Attraction · Mana cost: — · Color identity: Colorless

Shared traits: Timing Sorcery

Score details
Text (embedding)
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Color identity
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Score 0.467unitless formula ranking

Artifact — Attraction · Mana cost: — · Color identity: Colorless

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Score details
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Score 0.468unitless formula ranking

Land — Gate · Mana cost: — · Color identity: Colorless

Shared traits: No shared tags

Score details
Text (embedding)
0.763
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Color identity
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Mana cost
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No shared tags contributed to this comparison.

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Score 0.468unitless formula ranking

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Shared traits: No shared tags

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Mana cost
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Score 0.468unitless formula ranking

Land · Mana cost: — · Color identity: Colorless

Shared traits: No shared tags

Score details
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Color identity
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Mana cost
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Score 0.469unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
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Score 0.469unitless formula ranking

Instant · Mana cost: — · Color identity: Colorless

Shared traits: No shared tags

Score details
Text (embedding)
0.766
Tags and themes
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Color identity
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Mana cost
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Score 0.470unitless formula ranking

Land // Land · Mana cost: — · Color identity: UB

Shared traits: No shared tags

Score details
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Color identity
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Score 0.470unitless formula ranking

Instant · Mana cost: · Color identity: U

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Score details
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Score 0.470unitless formula ranking

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Shared traits: Timing Sorcery

Score details
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Color identity
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Mana cost
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Score 0.470unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
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0.763
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Mana cost
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Score 0.471unitless formula ranking

Instant · Mana cost: · Color identity: B

Shared traits: No shared tags

Score details
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0.764
Tags and themes
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Color identity
0.000
Mana cost
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Experience

Score 0.471unitless formula ranking

Card · Mana cost: — · Color identity: Colorless

Shared traits: Timing Sorcery

Score details
Text (embedding)
0.713
Tags and themes
0.167
Color identity
0.000
Mana cost
0.100

Shared tags

Timing Sorcery

Mental Note

Score 0.472unitless formula ranking

Instant · Mana cost: · Color identity: U

Shared traits: No shared tags

Score details
Text (embedding)
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Tags and themes
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Color identity
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Mana cost
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No shared tags contributed to this comparison.

Hengegate Pathway // Mistgate Pathway

Score 0.472unitless formula ranking

Land // Land · Mana cost: — · Color identity: WU

Shared traits: No shared tags

Score details
Text (embedding)
0.770
Tags and themes
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Color identity
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Mana cost
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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 (0.586); 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
Archenemy: Nicol Bolasen552017-06-16mythic$0.57
Zendikarfr1402009-10-02mythic—
Zendikaren1402009-10-02mythic$0.82
Zendikares1402009-10-02mythic—
Zendikarzhs1402009-10-02mythic—
Zendikarru1402009-10-02mythic—
Zendikarit1402009-10-02mythic—
Zendikarpt1402009-10-02mythic—
Zendikarde1402009-10-02mythic—
Zendikarja1402009-10-02mythic—