The 2019 Magic: The Gathering Sealock Monster (DDO-42) from The List set. This Uncommon Octopus creature features impactful Monstrosity abilities.
Sealock Monster
2019 • Magic: The Gathering • The List
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Description
Sealock Monster (DDO-42) is an Uncommon creature card from Magic: The Gathering's 2019 The List release. Designed by Adam Paquette, this card brings a unique Octopus creature to the table with a mana cost of {3}{U}{U} and a formidable 5/5 power and toughness. As a blue card, it fits seamlessly into decks that prioritize control and land manipulation. The card's design revolves around a strategic Monstrosity mechanic. Sealock Monster cannot attack unless the defending player controls an Island, creating a natural check against aggressive strategies. However, players can pay {5}{U}{U} to activate its Monstrosity 3 ability, placing three +1/+1 counters on the creature and marking it as monstrous. This transformation unlocks the card's most powerful effect: when it becomes monstrous, target land becomes an Island in addition to its other types. This ability to convert any land into an Island provides significant mana flexibility and disruption potential. It allows players to generate blue mana from unexpected sources while simultaneously denying opponents access to non-Island lands. The combination of a sturdy 5/5 body and land-acceleration potential makes Sealock Monster a versatile inclusion for collectors and players alike. The card's straightforward yet impactful rules text offers both mechanical depth and thematic flavor, appealing to enthusiasts who appreciate creative creature interactions. Whether you are completing a set or expanding your library with unique mechanics, this card represents a solid addition to any Magic: The Gathering enthusiast's roster.
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Card Details
The catalog profile below summarizes the card identity, featured subject, and notable collectible traits.
Catalog Profile
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Featured Subject
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Featured
Sealock Monster
Game
Magic: The Gathering
TCG Attributes
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Uncommon
Adam Paquette
Card Stock
English
{3}{U}{U}
Creature — Octopus
5 / 5
U
Card Text
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This creature can't attack unless defending player controls an Island. {5}{U}{U}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When this creature becomes monstrous, target land becomes an Island in addition to its other types.












