Shipbreaker Kraken 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.
Official card text
: Monstrosity 4. (If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control this creature.
Complete guide
Shipbreaker Kraken is a massive sea beast capable of locking down an entire battlefield once it ascends to its monstrous form. By investing mana into its monstrosity ability, you not only create a giant 10/10 threat but also freeze your opponents' best creatures indefinitely. This card is a powerhouse in late-game scenarios where board control is paramount.
Unlocking Monstrosity
Shipbreaker Kraken features the Monstrosity 4 keyword, a special activated ability that costs {6}{U}{U}. When you activate this, the game checks if the Kraken is already monstrous. if it isn't, the Kraken receives four +1/+1 counters and gains the status of 'monstrous.' This status is a permanent marker; even if the Kraken loses its abilities, it remains monstrous and cannot undergo the transformation again.
The Step-by-Step Resolution
First, you pay the mana to activate the monstrosity ability. Upon resolution, the Kraken becomes monstrous and the +1/+1 counters are placed. This immediately triggers its second ability, allowing you to choose up to four target creatures. As that triggered ability resolves, those creatures are tapped and gain a restriction: they will not untap during their controllers' untap steps for as long as you maintain control of Shipbreaker Kraken.
Maintaining the Lock
The 'freeze' effect is tied directly to your continuous control of Shipbreaker Kraken. If an opponent uses a spell to steal the Kraken, the lock is broken immediately, and those creatures will untap during their next untap step even if you steal the Kraken back later. Similarly, if Shipbreaker Kraken leaves the battlefield, the effect ends. However, if the Kraken is removed in response to the triggered ability, the targets still become tapped—they just won't be prevented from untapping later.
Strategic Deployment
Because the monstrosity ability can be activated at instant speed, you can wait for your opponent's end step or even use it as a surprise blocker. It is important to note that you can target creatures that are already tapped; the ability will simply ensure they stay that way. This is particularly useful for keeping aggressive threats out of the red zone for the remainder of the game.
Interaction examples
With Shipbreaker Kraken and Hullbreaker Horror on the battlefield, you have total control. You can activate the Kraken's monstrosity to tap down four of your opponent's blockers. If your opponent tries to cast a spell to destroy the Kraken in response, you can cast any spell to trigger Hullbreaker Horror and bounce the threat back to their hand, ensuring your Kraken becomes monstrous and the lock remains secure.
If your opponent controls a Psychosis Crawler, its power is tied to their hand size. By activating Shipbreaker Kraken's monstrosity, you can target the Psychosis Crawler. Even if it is already tapped from attacking, the Kraken's ability ensures that as long as you control the Kraken, the Crawler will never untap, neutralizing its combat threat regardless of how many cards your opponent draws.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Shipbreaker Kraken
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If you lose control of Shipbreaker Kraken between when its last ability triggers and when that ability resolves, the target creatures will become tapped. However, they won't be affected by the other effect and will untap as normal during their controllers' untap steps.
No other card is named in this ruling.
- #2· Wizards of the Coast
If another player gains control of Shipbreaker Kraken, the creatures will no longer be affected by the effect preventing them from untapping, even if you later regain control of Shipbreaker Kraken.
No other card is named in this ruling.
- #3· Wizards of the Coast
If you gain control of a creature that's being prevented from untapping, that creature won't untap during your untap step for as long as you control Shipbreaker Kraken.
No other card is named in this ruling.
- #4· Wizards of the Coast
The ability can target a tapped creature. If a targeted creature is already tapped when it resolves, that creature just remains tapped and doesn't untap during its controller's untap step.
No other card is named in this ruling.
- #5· Wizards of the Coast
Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.
No other card is named in this ruling.
- #6· Wizards of the Coast
Monstrous isn't an ability that a creature has. It's just something true about that creature. If the creature stops being a creature or loses its abilities, it will continue to be monstrous.
No other card is named in this ruling.
- #7· Wizards of the Coast
An ability that triggers when a creature becomes monstrous won't trigger if that creature isn't on the battlefield when its monstrosity ability resolves.
No other card is named in this ruling.
Legal formats
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Meta decks with Shipbreaker Kraken
No archived Top 8 deck with this card yet.



Hullbreaker Horror
Psychosis Crawler