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Unholy Annex // Ritual Chamber DSK 0118 · rare

Unholy Annex · {2}{B} · Enchantment — Room · At the beginning of your end step, draw a card. If you control a Demon, each opponent loses 2 life and you gain 2 life. Otherwise, you lose 2 life.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.) // Ritual Chamber · {3}{B}{B} · Enchantment — Room · When you unlock this door, create a 6/6 black Demon creature token with flying.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Unholy Annex · {2}{B} · Enchantment — Room · At the beginning of your end step, draw a card. If you control a Demon, each opponent loses 2 life and you gain 2 life. Otherwise, you lose 2 life. (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Ritual Chamber · {3}{B}{B} · Enchantment — Room · When you unlock this door, create a 6/6 black Demon creature token with flying. (You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Unholy Annex
2B
Ritual Chamber
3BB

Cast one door. On the battlefield, paying a locked door’s cost as a sorcery unlocks it without casting another spell.

Price
from $1.494 printings
Win rate
64.9% GIH 23,193 instances · Premier Draft
Sep 24–Oct 28, 2024 · 17Lands

Game-in-hand win rate, all deck colors. 15,052 wins in 23,193 card-in-hand instances.

22,560 distinct games · 7,771 distinct drafts · games recorded Sep 24–Oct 28, 2024.

17Lands file dated Oct 29, 2024 · 100-instance minimum · 17Lands public data ↗

Play

Unholy Annex: The three-mana black door draws at your end step, then drains if you control a Demon or costs you life otherwise. Track your life total and access to a Demon rather than assuming the draw is free. Ritual Chamber: The five-mana black door makes a 6/6 flying Demon when unlocked. It can be cast first for a substantial threat, or later to switch Unholy Annex's life loss into a drain.

More

One-pick Draft
Unholy Annex: The three-mana black door draws at your end step, then drains if you control a Demon or costs you life otherwise. Track your life total and access to a Demon rather than assuming the draw is free. Ritual Chamber: The five-mana black door makes a 6/6 flying Demon when unlocked. It can be cast first for a substantial threat, or later to switch Unholy Annex's life loss into a drain.
Sealed vs Draft
Unholy Annex: The three-mana black door draws at your end step, then drains if you control a Demon or costs you life otherwise. Track your life total and access to a Demon rather than assuming the draw is free. Ritual Chamber: The five-mana black door makes a 6/6 flying Demon when unlocked. It can be cast first for a substantial threat, or later to switch Unholy Annex's life loss into a drain.
Bombs
Unholy Annex: The three-mana black door draws at your end step, then drains if you control a Demon or costs you life otherwise. Track your life total and access to a Demon rather than assuming the draw is free. Ritual Chamber: The five-mana black door makes a 6/6 flying Demon when unlocked. It can be cast first for a substantial threat, or later to switch Unholy Annex's life loss into a drain.

Draft data

64.9%when drawn (GIH)

+10.4 pp vs 54.5% average · 23,193 instances

Premier Draft · Sep 24–Oct 28, 2024 · average from 1,011,949 games

#3 of 261 nonland cards by win rate · last seen around pick 1.7 on average (15,300 packs).

1 of 43 black cards · 1 of 8 black rare cards.

Taken at pick1.79,559 picks
Makes the deck84.9%9,559 picks with known usage
When played56.8%45,410.5 matchesBenched 56.0%
5,448.5 matches
When drawn64.9%23,193 instances

Pick and maindeck observations: Sep 24–Oct 28, 2024. Played/benched cells use matches when available; the drawn cell uses game instances.

○ Opening hand 64.9% · 9,345 instances
● Drawn later 64.9% · 13,848 instances

In hand 64.9% · 23,193 instances
Unseen in deck 50.2% · 29,348 instances
+14.7 percentage points when drawn

Compared with black cards

Win rate when drawn64.9%23,193 instances1 of 43
Opening hand64.9%9,345 instances1 of 42
Drawn later64.9%13,848 instances1 of 43
In the deck56.7%52,896 instances1 of 44
Without seeing it50.2%29,348 instances32 of 44
Improvement when drawn+14.7 pp23,193 instances / 29,348 instances1 of 43
When benched56.0%5,448.5 matches1 of 44
Makes the deck84.9%9,559 picks with known usage2 of 44
Pick (last seen)1.715,300 packs3 of 44
Taken at1.79,559 picks3 of 44

Ranks require 100 observations for that metric; comparisons are descriptive, not a pick order. Pick ranks put earlier picks first.

Best decks for it

no-splash decks only · card-level in-hand rates · 100 minimum

Sacrifice BR67.2%4,041 instancesEerie Control UB66.8%2,335 instancesDelirium Grind BG66.5%3,111 instancesReanimator WB66.1%2,832 instances

Each tick is this card’s all-decks rate (64.9% · 23,193 instances). A high card rate does not prove that splashing it will improve your deck.

Usually played with

Deck co-occurrence; not evidence of synergy.

Final Vengeance20,341 games with both in the deckMurder20,241 games with both in the deckInnocuous Rat19,234 games with both in the deck
How to read this

Observational, not a causal bonus. Both cards must be in the deck. Drawn means opening hand or normally drawn; each card counts once per game. Game-level approximate intervals do not account for repeated games by the same drafter.

At least 100 games in each of four drawn/not-drawn groups; adjusted for game length and screened by the lower confidence bound. Do not add these points to a card’s win rate.

Where it sits in the set

Above 99% of 261 nonland cards with 100+ instances, in win-rate order.

30% or lowerWin rate94% or higher

17Lands public datasets ↗ · CC BY 4.0 ↗ · Sep 24–Oct 28, 2024

Collect

4 printingsScryfall USD, snapshot Oct 25Pack odds →

Pick a printing for its prices and pull odds.

Prices

DSK 0118 · Regular printingListings ↗
FinishFound inPrice
NonfoilPlay Booster · MTGO Redemption$2.20
FoilCollector Booster · Play Booster$3.55

Foil in a Collector Booster · Modeled · About 1 in 78 packs (1.28%) · 14.3% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

How to pull it

Official rates for the whole category, not this card.

BoosterSlotPer packCategory
Collector BoosterTraditional foil rare or mythic100%Traditional foil rare or mythic

Wizards · Collecting Duskmourn: House of Horror ↗ · Oct 29, 2026

Details & sources

Legal in
Standard · Historic · Timeless · Pioneer · Modern · Legacy · Vintage · CommanderLimited eligibility depends on the event and its booster pool.
Illustration
Matteo Bassini, DSK 118 · Scryfall ↗
More like this
Regular printing printings →
Sources
Wizards · Duskmourn: House of Horror release notes · Oct 19, 2026
Wizards · Collecting Duskmourn: House of Horror · Oct 29, 2026
Scryfall USD, snapshot Oct 25
Comprehensive Rules ↗