Unholy Annex/Ritual Chamber

Top Performing Decklists

Deck Creator Record Best Finish
Mono Black Demons platinum-mythic rank player 6-0 1st in Traditional Standard Ranked Decklists: April 14, 2025
Golgari Obliterator platinum-mythic rank player 6-0 1st in Traditional Standard Ranked Decklists: April 14, 2025
Orzhov Pixie sam_lewin 7-2 None
Golgari Midrange pnutz47 6-2 None
Golgari Midrange dr4ken 6-2 None
Orzhov Pixie stickywicket 6-2 None

Performance Stats (Last 14 Days)

Win Rate Impact
+1.2%
vs average deck
Top Table Win Rate
81.0%
placement-weighted
Meta Trend
+8.5%
recent vs earlier
Sample Size
47
decks
Tournament Results
20
1st place
35
top 8
Average Copies
3.2
per deck

Meta Performance Analysis

Unholy Annex/Ritual Chamber ranks #402 out of approximately 406 cards in raw efficiency (top 99%).

Game Impact Factor
78.46
How much this card influences game outcomes
Color Differential
-0.00%

Black average: 74.5%

Performance compared to other Black cards

Based on our comprehensive multi-metric analysis, Unholy Annex/Ritual Chamber is an underperforming card in the current meta.

Recommended number of copies: 1

Win Rate Timeline

Card Efficiency Analysis

Raw Efficiency (Win Rate/Mana)
9.5
Win percentage points per mana invested
Relative Efficiency
0.12x
Compared to average cards of same mana value

Performance Efficiency: 7.07 (Win rate × Top 8 rate ÷ Mana value)

At 8 mana, the average win rate in the format is 80.3%. Unholy Annex/Ritual Chamber has a win rate of 75.9%, making it 5.5% worse than other 8-mana cards.

Top Performing Partners

Card Name Type Deck Count Win Rate 1st Places
Vinereap Mentor Creature — Squirrel Druid 5 89.3% 3
Wilt-Leaf Liege Creature — Elf Knight 5 71.2% 0
Breach the Multiverse Sorcery 14 70.2% 9
Pest Control Sorcery 11 69.2% 2
Piggy Bank Artifact Creature — Boar Toy 6 67.7% 2
Analyze the Pollen Sorcery 11 67.2% 3
Sunpearl Kirin Creature — Kirin 18 66.0% 5
Royal Treatment Instant 29 64.8% 10
Cathar Commando Creature — Human Soldier 5 63.3% 0
Scrollshift Instant 7 63.1% 1

Card Synergy Analysis

Cards that perform better with Unholy Annex/Ritual Chamber than they do on average. A positive synergy score indicates stronger performance together.

Card Name Type Mana Decks Win Rate Together Win Rate Apart Synergy Score
Deadly Cover-Up Sorcery 5 7 100.0% 78.7% +21.3%
Rot-Curse Rakshasa Creature — Demon 2 5 100.0% 79.4% +20.6%
The Speed Demon Legendary Creature — Demon 5 6 100.0% 88.0% +12.0%
Lumbering Worldwagon Artifact — Vehicle 3 5 100.0% 88.0% +12.0%
Gix's Command Sorcery 5 23 82.2% 73.8% +8.4%
Anoint with Affliction Instant 2 23 81.9% 73.9% +8.0%
Virtue of Persistence Enchantment // Sorcery — Adventure 7 5 83.3% 75.9% +7.4%
Heritage Reclamation Instant 2 6 82.4% 75.2% +7.2%
The End Instant 4 11 84.2% 77.2% +7.0%
Harvester of Misery Creature — Spirit 5 16 83.9% 77.8% +6.1%

Top Archetypes

Archetype Deck Count % of Archetype Win Rate
Golgari Demons 439 80.5% 46.5%
Golgari Midrange 291 37.5% 47.4%
Mono Black Demons 95 96.9% 37.1%
Dimir Demons 61 60.4% 50.4%
Orzhov Pixie 50 68.5% 53.2%

Statistics Explanation

Statistic Description Formula
Win Rate Impact How much this card increases or decreases the win rate of decks that include it, compared to the average deck in the format. (Win rate of decks with this card) - (Average win rate of all decks)
Top Table Win Rate A weighted win rate that gives more significance to performance in higher tournament placements. First place finishes count for 2x, with diminishing weight down to 8th place. ∑(wins × placement_weight) / ∑((wins + losses) × placement_weight)
Meta Trend Shows if the card is performing better or worse in the most recent period compared to earlier periods. Positive values indicate improving performance. (Win rate in recent half of time period) - (Win rate in earlier half of time period)
Confidence Factor A measure of statistical reliability based on sample size. The progress bar indicates how confident we are in the statistics (with larger sample sizes providing higher confidence). log10(Number of decks + 1)
Average Copies The average number of copies of this card included in decks that use it. ∑(Copies in each deck) / (Number of decks)
Card Synergy Score Measures how well this card performs with other cards compared to their individual performance. (Win rate together) - (Average of individual win rates)
Raw Efficiency Win rate points per mana invested. Higher values indicate better returns on mana investment. (Win rate) / (Mana value)
Relative Efficiency How efficient this card is compared to the average card of the same mana value. ((Win rate) / (Format average win rate for same mana)) / (Mana value)
Performance Efficiency Combined metric that accounts for win rate, tournament success, and mana investment. (Win rate × Top 8 placement rate) / (Mana value)
Game Impact Factor A measure of how much this card affects game outcomes, based on win rate adjusted by its deviation from the format average. Win rate × (1 + (Win rate - Format average) / 100)
Color Differential How this card's win rate compares to the average win rate of other cards of the same color. Win rate - Average win rate for same color

All statistics are calculated using tournament data from the selected time period. Sample sizes below 10 decks may not provide statistically significant results.