# H10 — Cerberus

Frozen revision: `clash-support-v1.0-20260925`

Source: `cards/clash-custom.yaml`

Source SHA-256: `2a0e41680f30b86833a435734dab09c93efd17954294d7c3579389ac25753744`

Generation: built-in imagegen; one initial call per card.

## Immutable card specification

```json
{
  "id": "H10",
  "name": "Cerberus",
  "mana_cost": "{3}{B}{B}",
  "colors": [
    "B"
  ],
  "type_line": "Legendary Creature — Dog",
  "rules_text": "Menace\nCreatures you control with finality counters on them have menace.\nWhenever Cerberus attacks, exile up to three target creature cards from graveyards. Put two +1/+1 counters on Cerberus for each card exiled this way.",
  "power": "5",
  "toughness": "5",
  "rarity": "rare",
  "replaces": "Grave Titan",
  "primary_role": "threat",
  "signature": false,
  "myth_source": "https://www.theoi.com/Ther/KuonKerberos.html",
  "myth_connection": "Hesiod's Theogony describes the underworld hound admitting arrivals but devouring those who try to leave. Exiling potential resurrection targets makes the guard close off escape; growing through this act makes the hound a tangible threat. The three-target limit echoes the familiar three-headed depiction. Granting menace to Hades's permitted returnees is a creative extension of his authority over the guard.",
  "narrative_beat": "The same realm that grants an exceptional release still has a terrifying boundary.",
  "design_note": "A combat finisher and graveyard answer that grows only through attacks and finite targets. Five mana buys no immediate removal or haste. Menace lets the marked army turn its accumulated strength into damage instead of sitting behind a wall of small blockers.",
  "signature_demo": null,
  "counterplay": "Remove Cerberus before combat, exile targeted graveyard cards in response, supply two blockers, or bounce it to erase accumulated counters. The attack trigger can resolve after Cerberus is removed, but cannot put counters on the absent creature.",
  "art_brief": "A single massive three-headed hound stands across a narrow doorway, one head growling and the other two watching. Plain stone, clear anatomy, no field of tiny skeletons.",
  "tokens": []
}
```

## Input references

- Image 1, frame/layout only: `/Users/dthurn/clash/output/cards/custom/hades/references/gisa-glorious-resurrector.png`. Gisa, Glorious Resurrector, MID 103, normal printing. Source: https://scryfall.com/card/mid/103/gisa-glorious-resurrector?utm_source=api. Image URL: https://cards.scryfall.io/png/front/6/3/63461076-a13d-488d-bd82-ceac441341c8.png?1783925617. Visually inspected before submission.
- Image 2, art style/set mark only: `/Users/dthurn/clash/output/cards/hades-host-of-many-v1.png`. Existing approved Clash Hades commander; art style and set mark only. Visually inspected before submission.

## Exact actual generation prompt

```text
Use case: product-mockup
Asset type: one complete custom Magic: The Gathering card face for Clash.
Create a high-resolution flat upright 5:7 card, full black outside border visible, no photographic perspective.
Image 1 is FRAME/LAYOUT reference ONLY. Match its modern conventional proportions, title at top left, mana top right, landscape art window, type bar below art, pale lower rules panel, rare oval and compact black footer. Replace all reference words and illustration.
Last image is ART STYLE/SET MARK reference ONLY: approved Clash Hades commander, its painterly fantasy realism and small lightning mark. Do not copy its Nyx or creature frame unless explicitly required below. Never copy its card data.
Frame: modern monoblack legendary creature, charcoal frame, gray name/type bars and integrated legendary crown, no Nyx. P/T badge 5/5.
Typography: crisp Beleren-style name/type and Plantin-style rules serif. Keep name on one line and clear the mana; full type line clear of the small set mark. Generous readable rules, natural paragraph breaks.
Art: A single massive three-headed hound stands across a narrow doorway, one head growling and the other two watching. Plain stone, clear anatomy, no field of tiny skeletons.
One focal narrative moment. Restrained charcoal, pale stone, muted gold and natural light. Keep only the scene's useful supporting details, with quiet background. Painting contained inside the landscape art window. No letters in painting.

EXACT CARD DATA. Do not print these labels or quotation marks.
Name: Cerberus
Mana cost: {3}{B}{B}
Render every mana token as its correct circular glyph in EXACT order: numerals neutral circles, W white sun, B black skull. Inline {T} must be proper curved-arrow TAP symbol, not letter T. No literal braces or W/B letters.
Type: Legendary Creature — Dog
Rules, preserving paragraphs and exact wording:
Menace

Creatures you control with finality counters on them have menace.

Whenever Cerberus attacks, exile up to three target creature cards from graveyards. Put two +1/+1 counters on Cerberus for each card exiled this way.
Power/toughness: 5/5
Rarity: rare; small gold lightning-bolt mark at right end of type bar.
Footer: CLASH • CUSTOM • PLAYTEST
Collector identifier: H10
Standard small centered bottom rare oval.
No flavor, no finality reminder, no invented reminder or other text, no artist or official release identity. Do not omit restrictions or invent mechanics; exact supplied card data must all be present. 
No ornate alternative UI, no oversized frame decorations, no text over busy artwork, no title/cost overlap, no missing bottom border.
For exact rarity consistency, the rare set lightning mark is muted metallic GOLD, not orange, amber, red or copper. Frame surface is plain subtle metal/paper texture: absolutely no star-shaped sparkles, glitter, constellations or Nyx star field in crown or side rails.
```

## Observed visual QA

Passed exact Cerberus, 3BB, Legendary Creature — Dog, 5/5. Menace and both full paragraphs correct: marked creatures have menace; attacks exiles up to three target creature cards from graveyards; two +1/+1 counters per card. All text clear of badge. Plain black legendary frame, gold rare lightning. Single three-headed hound with coherent body blocks doorway; one head growls and two watch.

Output dimensions: 1060 × 1484 pixels.

Image SHA-256: `1f8b9a9f4f66e119454e6fe5d6d11361735fdbab0778344acfb982d488efc2d3`