How much is Unholy Annex // Ritual Chamber worth?

As of August 2026, Unholy Annex // Ritual Chamber from Duskmourn: House of Horror Promos has a market value of €1.46. Track price trends and find local trades on Lootstack.

What finishes is Unholy Annex // Ritual Chamber available in?

Unholy Annex // Ritual Chamber is available in Foil, Nonfoil. Each finish may have a different market value — compare prices for each version on Lootstack.

Where can I trade Unholy Annex // Ritual Chamber locally?

You can find local traders with Unholy Annex // Ritual Chamber on Lootstack in Sofia, Bulgaria. Browse 2 listings from players at local game stores near you. No shipping required — trade in person.

What set is Unholy Annex // Ritual Chamber from?

Unholy Annex // Ritual Chamber is from the Duskmourn: House of Horror Promos (PDSK) expansion, part of the Magic: The Gathering trading card game.

What rarity is Unholy Annex // Ritual Chamber?

Unholy Annex // Ritual Chamber is a Rare card from the Duskmourn: House of Horror Promos set in Magic: The Gathering.

What type of card is Unholy Annex // Ritual Chamber?

Unholy Annex // Ritual Chamber is a Enchantment — Room from the Duskmourn: House of Horror Promos set in Magic: The Gathering.

Is Unholy Annex // Ritual Chamber legal in Standard?

Unholy Annex // Ritual Chamber is Legal in Standard. Check all format legalities for this Magic: The Gathering card on Lootstack.

Unholy Annex // Ritual Chamber - Duskmourn: House of Horror Promos

Card Availability

See where Unholy Annex // Ritual Chamber is available worldwide and at your local stores

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Legalities

LEGAL

Brawl

LEGAL

Commander

LEGAL

Duel

LEGAL

Future

UNKNOWN

Frontier

LEGAL

Historic

LEGAL

Legacy

LEGAL

Modern

UNKNOWN

Oathbreaker

UNKNOWN

Pauper

UNKNOWN

Penny

LEGAL

Pioneer

LEGAL

Standard

LEGAL

Vintage

Rules & Rulings

9/20/2024

While in any zone other than the stack or the battlefield, a Room card's characteristics are a combination of its two doors. For example, Bottomless Pool // Locker Room has a mana value of 6 while it's in your library. If an effect allows you to search your library for a card with mana value 4 or less, you can't find Bottomless Pool // Locker Room.

9/20/2024

If a spell or ability would create a copy of a Room spell on the stack, the copy retains the choice of which door was cast but also retains the full characteristics of the spell. The characteristics of the door that wasn't cast are still ignored while the copy is on the stack, and when the copy resolves, the token it becomes will enter with the appropriate door unlocked.

9/20/2024

To cast a Room spell, choose a half (or "door") to cast. There's no way to cast both halves of a Room card. When the Room spell resolves, the corresponding door becomes unlocked as the Room enters.

9/20/2024

An ability that triggers "when you unlock this door" triggers when that door becomes unlocked. This can happen one of two ways: (1) the door becomes unlocked on the battlefield or (2) the door becomes unlocked as the Room enters the battlefield because you cast the corresponding half. In the latter case, since the door becoming unlocked is what causes the ability to trigger, effects that cause abilities that trigger when a permanent enters to trigger an additional time (such as that of Panharmonicon) won't apply.

9/20/2024

Any time you have priority during a main phase of your turn and the stack is empty, you may pay the mana cost of a locked door (also called its "unlock cost"). That door becomes unlocked. This is a special action. It doesn't use the stack and can't be responded to.

9/20/2024

Each Room card has two names. If an effect instructs you to choose a card name, you may choose one of those names, but not both.

9/20/2024

Some doors have abilities that trigger whenever you unlock that door and require one or more targets. You can unlock that door even if there would be insufficient legal targets for that triggered ability. The triggered ability won't go on the stack.

9/20/2024

While on the battlefield, a Room's characteristics are a combination of the characteristics of its unlocked doors. For example, if Bottomless Pool // Locker Room is on the battlefield with both doors unlocked, its names are Bottomless Pool and Locker Room, its mana value is 6, it's a Room Enchantment, and it has the abilities in each door's text box.

9/20/2024

If a Room enters from any zone other than the stack, it will enter with both halves locked.

9/20/2024

Some abilities allow you to lock a door of a Room you control. You can't choose to lock a door that's already locked with such an ability. If such an ability requires a target, you can target a Room even if both of its doors are locked, but the ability won't do anything when it resolves.

9/20/2024

If neither door of a Room is unlocked, it's a Room enchantment with no name and no abilities.

9/20/2024

Each Room card is a single card. For example, if you discard a Room card, you've discarded one card, not two. If an effect counts the number of enchantment cards in your graveyard, Bottomless Pool // Locker Room counts once, not twice.

9/20/2024

Room cards have two card faces with a shared type line on a single card. The characteristics of the door you didn't cast are ignored while the spell is on the stack.

9/20/2024

Some abilities allow you to unlock a door of a Room you control. You can't choose to unlock a door that's already unlocked with such an ability. If such an ability requires a target, you can target a Room even if both of its doors are unlocked, but the ability won't do anything when it resolves.

9/20/2024

An ability that triggers "whenever you fully unlock a Room" triggers when a door becomes unlocked and the other door of that Room is already unlocked, or when both doors of that Room become unlocked simultaneously.

9/20/2024

If an effect allows you to cast a spell with certain characteristics, consider only the characteristics of the door you're casting. For example, if an effect allows you to cast a permanent spell with mana value 3 or less from among cards in your graveyard, you could cast Bottomless Pool this way, but not Locker Room.

9/20/2024

To cast a Room spell, choose a half (or "door") to cast. There's no way to cast both halves of a Room card. When the Room spell resolves, the corresponding door becomes unlocked as the Room enters.

9/20/2024

Each Room card has two names. If an effect instructs you to choose a card name, you may choose one of those names, but not both.

9/20/2024

If a Room enters from any zone other than the stack, it will enter with both halves locked.

9/20/2024

If neither door of a Room is unlocked, it's a Room enchantment with no name and no abilities.

9/20/2024

Room cards have two card faces with a shared type line on a single card. The characteristics of the door you didn't cast are ignored while the spell is on the stack.

9/20/2024