Your search for "*Monster of the Abyss*" revealed the following:

Descend on the Prey
[Born of the Gods Battle the Horde]

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Chevill, Bane of Monsters
[Ikoria: Lair of Behemoths Prerelease Promos]

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Terror of Towashi
[March of the Machine Prerelease Promos]

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Lazotep Reaver
[War of the Spark]

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Monstrosity of the Lake
[The Lord of the Rings: Tales of Middle-Earth Commander Showcase Scrolls]

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Giggling Skitterspike (Extended Art)
[Duskmourn: House of Horror Commander]

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Mermail Abyssbalaen
[LTGY-EN083 Ultra Rare]

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Snapdax, Apex of the Hunt (Showcase)
[Ikoria: Lair of Behemoths]

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Rust Monster (Showcase)
[Dungeons & Dragons: Adventures in the Forgotten Realms]

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Overlord of the Floodpits (Extended Art)
[Duskmourn: House of Horror]

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The Dead Marshes - Urborg, Tomb of Yawgmoth (Serialized)
[The Lord of the Rings: Tales of Middle-Earth Commander]

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Abhorrent Oculus
[Duskmourn: House of Horror]

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Mines of Moria (Borderless Alternate Art) (342)
[The Lord of the Rings: Tales of Middle-Earth]

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Redhorn Pass - Mouth of Ronom (Serialized)
[The Lord of the Rings: Tales of Middle-Earth Commander]

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Modular Monstrosity (Unfinity Foil Edition)
[The List]

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Blight Titan (Extended Art)
[March of the Machine Commander]

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