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

Consuming Rage
[Born of the Gods Battle the Horde]

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Kiora, Sovereign of the Deep (Showcase Halo Foil)
[March of the Machine: The Aftermath]

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The 13th Grave
[LOB-014 Common]

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Machine Lord Ur
[BP02-EN072 Mosaic Rare]

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Priestess of the Ashened City
[PHNI-EN093 Ultra Rare]

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The Book of Vile Darkness (Ampersand Promo)
[Dungeons & Dragons: Adventures in the Forgotten Realms Promos]

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Shocktopus
[BP02-EN102 Mosaic Rare]

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Osseous Sticktwister
[Duskmourn: House of Horror]

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The Despair Uranus
[DLCS-EN105 Common]

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Rod of Absorption
[Dungeons & Dragons: Adventures in the Forgotten Realms Commander]

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Mecha Phantom Beast Turtletracer
[LTGY-EN000 Super Rare]

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Overlord of the Floodpits (Japan Showcase Fracture Foil)
[Duskmourn: House of Horror]

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Ikoria: Lair of Behemoths Draft Booster Box

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Rod of Absorption (Extended Art)
[Dungeons & Dragons: Adventures in the Forgotten Realms Commander]

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Raiza the Storm Monarch
[SR01-EN009 Common]

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M-Warrior #2
[LOB-077 Common]

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