Underwater Tunnel // Slimy Aquarium DSK 0079 · common
Underwater Tunnel · {U} · Enchantment — Room · When you unlock this door, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) (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.)
Slimy Aquarium · {3}{U} · Enchantment — Room · When you unlock this door, manifest dread, then put a +1/+1 counter on that creature. (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.)
- Underwater Tunnel
- U
- Slimy Aquarium
- 3U
Cast one door. On the battlefield, paying a locked door’s cost as a sorcery unlocks it without casting another spell.
- Price
- from $0.121 printing
- Win rate
- 54.6% GIH 105,653 instances · Premier Draft
Sep 24–Oct 28, 2024 · 17Lands
Game-in-hand win rate, all deck colors. 57,699 wins in 105,653 card-in-hand instances.
94,567 distinct games · 30,837 distinct drafts · games recorded Sep 24–Oct 28, 2024.
17Lands file dated Oct 29, 2024 · 100-instance minimum · 17Lands public data ↗
Play
Underwater Tunnel: One blue mana gives surveil 2 when unlocked, preparing draws and graveyard types. The door itself supplies no creature or card advantage, so use it with enchantment rewards or the later manifest door. Slimy Aquarium: The four-mana blue door manifests dread and adds a counter to that creature. The face-down body still has no inherent ward; turning it up later does not cause it to enter again.
More
- One-pick Draft
- Underwater Tunnel: One blue mana gives surveil 2 when unlocked, preparing draws and graveyard types. The door itself supplies no creature or card advantage, so use it with enchantment rewards or the later manifest door. Slimy Aquarium: The four-mana blue door manifests dread and adds a counter to that creature. The face-down body still has no inherent ward; turning it up later does not cause it to enter again.
- Sealed vs Draft
- Underwater Tunnel: One blue mana gives surveil 2 when unlocked, preparing draws and graveyard types. The door itself supplies no creature or card advantage, so use it with enchantment rewards or the later manifest door. Slimy Aquarium: The four-mana blue door manifests dread and adds a counter to that creature. The face-down body still has no inherent ward; turning it up later does not cause it to enter again.
Draft data
+0.1 pp vs 54.5% average · 105,653 instances
Premier Draft · Sep 24–Oct 28, 2024 · average from 1,011,949 games
#144 of 261 nonland cards by win rate · last seen around pick 5.2 on average (303,970 packs).
27 of 42 blue cards · 8 of 15 blue common cards.
62,089.2 matches
Pick and maindeck observations: Sep 24–Oct 28, 2024. Played/benched cells use matches when available; the drawn cell uses game instances.
○ Opening hand 52.9% · 42,542 instances
● Drawn later 55.7% · 63,111 instances
In hand 54.6% · 105,653 instances
Unseen in deck 53.3% · 134,857 instances
+1.3 percentage points when drawn
Compared with blue cards
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
Eerie Tempo WU57.2%28,422 instancesRooms UR54.8%12,438 instancesManifest Dread UG54.5%15,943 instancesEerie Control UB54.1%7,154 instancesEach tick is this card’s all-decks rate (54.6% · 105,653 instances). A high card rate does not prove that splashing it will improve your deck.
Best with
Adjusted associations, ranked by confidence.
Final Vengeance+7.5 pp11,406 games with both in the deck · 3,043 both drawnParanormal Analyst+4.8 pp37,964 games with both in the deck · 9,869 both drawnCryptid Inspector+3.2 pp28,387 games with both in the deck · 7,515 both drawnHow 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 45% of 261 nonland cards with 100+ instances, in win-rate order.
17Lands public datasets ↗ · CC BY 4.0 ↗ · Sep 24–Oct 28, 2024
Pick a printing for its prices and pull odds.
| Finish | Found in | Price |
|---|---|---|
| Nonfoil | Play Booster · MTGO Redemption | $0.12 |
| Foil | Collector Booster · Play Booster | $0.24 |
Foil in a Collector Booster · Modeled · About 1 in 19 packs (5.38%) · 48.5% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →
How to pull it
Official rates for the whole category, not this card.
| Booster | Slot | Per pack | Category |
|---|---|---|---|
| Collector Booster | Traditional foil commons | 100% per position | Traditional foil commons |
Wizards · Collecting Duskmourn: House of Horror ↗ · Oct 29, 2026
Details & sources
- Legal in
- Standard · Historic · Timeless · Pioneer · Modern · Legacy · Pauper · Vintage · CommanderLimited eligibility depends on the event and its booster pool.
- Illustration
- Titus Lunter, DSK 79 · 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 ↗