[Card Bug] Mephidross Vampire: Color-changing static with keyword grant not parsing

[jsdevninja]

Card

Mephidross Vampire

Oracle text:

All creatures are black and have lifelink.

Actual Behavior

The static ability parses to only the keyword grant (lifelink), dropping the color-changing effect entirely.

Expected Behavior

Mephidross Vampire should:

1. Set all creatures to black (color-changing static, Layer 5)
2. Grant lifelink keyword (ability-adding static, Layer 6)
   Both effects should apply simultaneously per CR 611.2b.

Root Cause

Similar to Onakke Catacomb (#5807), this is a compound static where a color-defining predicate is followed by 'and have <keyword>'. The parser's dispatch order claims this on the keyword path before the color path is tried.

Proposed Fix

Extend the dispatch logic in oracle_static/dispatch.rs to probe the color-leading compound handler before parse_continuous_gets_has, mirroring the fix pattern from PR #5807. The color path should extract both the color and any trailing modifications as one compound static.

CR References

• CR 105.2 — object color
• CR 613.1e — Layer 5 (color-changing effects)
• CR 613.1f — Layer 6 (ability-adding effects)
• CR 611.2b — effects in the same layer applied in a defined order

Classification

• Parser bug with structural similarity to PR fix(parser): compose a color-defining static's color with trailing modifications (Onakke Catacomb) #5807
• Supported aspect defect (color + keyword compound)
• P3 (card-specific)

[jsdevninja]

Analysis

This pattern is already covered by the fix in PR #5807 (Onakke Catacomb). The 'All creatures are black and have lifelink' compound static (color + keyword) is correctly handled by:

1. parse_color_and_trailing_modifications in type_change.rs - splits color expression from trailing keyword/pump modifications
2. Dispatch ordering in dispatch.rs - calls parse_all_subject_are_color before parse_continuous_gets_has

This ensures both the SetColor and AddKeyword modifications are emitted rather than the color being silently dropped.

A regression test has been added to verify this behavior.

[mike-theDude]

Triage analysis

Clarified summary
The report describes Mephidross Vampire as having the static ability "All creatures are black and have lifelink" and claims the colour half is dropped during parsing.

Investigation findings
The premise does not hold. Mephidross Vampire's actual Oracle text contains no colour-changing clause and no lifelink grant, so there is no colour-plus-keyword compound static on this card to drop. The card's real static ability parses to a supported continuous effect that adds the Vampire subtype to creatures you control and grants them the damage trigger, with the trigger and its counter effect both represented. Nothing on this card is currently misparsing.

The follow-up comment on this issue separately concludes the described pattern is already handled by the referenced prior work.

Oracle text (verified from client/public/card-data.json)

Flying
Each creature you control is a Vampire in addition to its other creature types and has "Whenever this creature deals damage to a creature, put a +1/+1 counter on this creature."

Reproduction status
Cannot localize as filed — the quoted card text is not this card's text.

What would unblock this

1. The card name actually observed misbehaving, if it was not Mephidross Vampire.
2. The clause that misbehaved, quoted from the card as it appears in-game.
3. What the game did versus what was expected.

If the intent was to track the general "colour-defining static followed by and have <keyword>" dispatch pattern rather than a specific card, please say so and name a card that actually prints that text — the issue can then be retitled to the pattern.

Likely scope
area:parser — compound static dispatch, if a real card exhibiting the pattern is identified.

[mike-theDude]

Classifier analysis

Verdict: cannot_determine

Matched clause: (none) (supported: n/a)

Reasoning: The Oracle text quoted in the issue ("All creatures are black and have lifelink") is not Mephidross Vampire's text. The card's actual printed static ability is the Vampire-subtype-plus-damage-trigger continuous effect, which the engine records as supported and parses into a continuous static with the subtype modification and a nested damage trigger carrying its +1/+1 counter effect. There is no colour-changing clause on this card, so no clause matches the reported defect and no card-data-attributable gap can be confirmed. Re-file against a card that actually prints the colour-plus-keyword compound if that pattern is the real target.

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Posted by bug-coverage-classifier skill.

[mike-theDude]

Backlog audit (2026-07-25): this issue is based on Oracle text that Mephidross Vampire does not have. Its actual ability grants the Vampire subtype and a damage trigger; it contains neither an all-creatures-black clause nor lifelink. The hypothetical color-plus-keyword parser pattern is also already covered by merged PR #5807. There is no real card clause here to reproduce.

Please close/delete this invalid issue. If another real card exhibits the pattern, file it with that card’s current Oracle text.

[matthewevans]

Closing per mike-theDude's triage above — cannot-reproduce / works-as-intended / stale. If this still occurs on current main, please reopen with a concrete repro (build hash + save state or steps).