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40 lines
2.3 KiB
Markdown
40 lines
2.3 KiB
Markdown
# MTG Python Deckbuilder v4.3.1
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## Summary
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Adds Smart Land Bases — automatic land count and mana-base profile selection driven by the commander's CMC and color-pip density, with no configuration required.
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## Added
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### Smart Land Bases
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When `ENABLE_SMART_LANDS=1` (default in Docker), the builder analyzes the commander profile at build time and automatically selects a land count, mana-base profile, and ETB tapped tolerance suited to the deck's speed and color complexity.
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**Speed detection**
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Commander CMC is used to classify the deck as fast (< 3.0), mid, or slow (> 4.0). The user's configured ideal land count is offset accordingly:
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- Fast: −2 lands
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- Mid: ±0
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- Slow: +2 to +4, scaling with color count
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**Profile selection**
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Three mana-base profiles determine the ratio of basics to non-basics and the ETB tapped tolerance:
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- *Basics-heavy* (~60% basics) — 1–2 color decks or low pip density
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- *Balanced* — 2–3 colors with moderate pip density (standard)
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- *Fixing-heavy* — 3+ colors or high pip density (≥15 double-pip or ≥3 triple-or-more-pip cards); minimizes basics in favor of duals and fetches
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**ETB tapped tolerance**
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Automatically tightened for fast decks (fewer taplands allowed) and loosened for slow decks, so the land selection step reinforces the speed profile.
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**Budget override**
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When Budget Mode is active with a low cap and 3+ colors, the profile is automatically forced to basics-heavy to avoid recommending expensive fetch/shock lands the deck cannot afford.
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**Slot earmarking**
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After the land target is set, non-land ideal counts (creatures, ramp, removal, wipes, card draw, protection) are scaled proportionally to fit within the remaining slots. This prevents the spell-fill phases from consuming slots reserved for lands.
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**Backfill**
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A final land step (Step 9) pads the deck with basics if any land phase fell short, guaranteeing the deck reaches the configured land target. A swap mechanism handles the 100-card safety clamp so backfill basics are never silently trimmed.
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**Smart Lands notice**
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The Land Summary section in the build output explains the chosen profile, land target, and reasoning in plain English.
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**Overrides**
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- `LAND_PROFILE=basics|mid|fixing` — force a specific profile, bypassing auto-detection
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- `LAND_COUNT=<n>` — force a specific land count, bypassing curve calculation
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