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Rules guide · Land

Choked EstuaryHow it works & interactions with other cards

By the ManaCount desk· 2 min read· Star Trek Commander· November 13, 2026
Carte Magic Choked Estuary

Choked Estuary is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

01

Official card text

As this land enters, you may reveal an Island or Swamp card from your hand. If you don't, this land enters tapped. {T}: Add {U} or {B}.

Complete guide

Choked Estuary is part of the 'reveal' land cycle, designed to reward players for building decks with consistent mana bases. It provides flexible access to both Blue and Black mana while offering the potential to enter the battlefield untapped for an early-game tempo boost.

A Matter of Subtypes

The most important thing to remember is that Choked Estuary checks for land types, not land names. To have it enter untapped, you must reveal a card from your hand that explicitly has the 'Island' or 'Swamp' subtype on its type line. While basic Islands and Swamps work perfectly, any non-basic land with these types—such as 'Shock lands' or 'Triomes'—will also satisfy the requirement.

Timing the Reveal

The choice to reveal happens as the land enters the battlefield. This is a replacement effect, not a triggered ability, so it does not use the stack and cannot be responded to. If you choose not to reveal a card, or if you don't have a valid card in hand, Choked Estuary enters the battlefield tapped and cannot be used for mana until your next untap step.

Interactions with Other Effects

If an external effect, such as a spell that puts a land into play, specifically states the land enters the battlefield tapped, that effect overrides Choked Estuary's ability. Even if you reveal an Island or Swamp, the land will remain tapped. Additionally, remember that Choked Estuary itself does not have any subtypes; you cannot reveal one Estuary to satisfy the entry requirement of another.

Interaction examples

Simple Mana Fix

On turn one, you play Choked Estuary. You reveal a basic Swamp from your hand. Choked Estuary enters untapped, and you immediately tap it to add one Blue mana to cast a spell.

The Missing Subtype

You have Choked Estuary and Command Tower in hand. Although Command Tower can produce Blue or Black mana, it does not have the 'Island' or 'Swamp' subtype. If you play Choked Estuary and only have Command Tower to reveal, Choked Estuary must enter the battlefield tapped.

Opponent's Influence

You play Choked Estuary while holding Exotic Orchard. Just like Command Tower, Exotic Orchard lacks the necessary subtypes. Choked Estuary enters tapped. On your next turn, you can play Exotic Orchard, which may tap for Blue or Black depending on your opponent's lands, but it never helps Choked Estuary enter untapped.

Guide written with AI from the official text and rulings. Official English text prevails.

How it works : Choked Estuary

Original English text — Wizards of the Coast / Scryfall

  1. #1· Wizards of the Coast

    Lands don't have a subtype just because they can produce mana of the corresponding color. Choked Estuary itself is neither an Island nor a Swamp, even though it produces blue and black mana, so you can't reveal one to satisfy the ability of another.

    No other card is named in this ruling.

  2. #2· Wizards of the Coast

    If an effect instructs you to put Choked Estuary onto the battlefield tapped, it will still enter the battlefield tapped even if you reveal a land card from your hand.

    No other card is named in this ruling.

  3. #3· Wizards of the Coast

    If an Island or Swamp is entering the battlefield from your hand at the same time as Choked Estuary, you may reveal the other land to have Choked Estuary enter untapped.

    No other card is named in this ruling.

  4. #4· Wizards of the Coast

    You may reveal any land card with either or both of the appropriate subtypes. It doesn't have to be a basic land. For example, you could reveal Prairie Stream from the Battle for Zendikar set to satisfy the ability of Choked Estuary.

    No other card is named in this ruling.

02

Legal formats

historictimelessgladiatorpioneermodernlegacyvintagepennycommanderoathbreakerbrawlcompetitivebrawldueltlr
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