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

Voracious Fell Beast (Borderless Alternate Art)
[The Lord of the Rings: Tales of Middle-Earth]

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Shelob, Child of Ungoliant (Extended Art) (Surge Foil)
[The Lord of the Rings: Tales of Middle-Earth]

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Sorcerer of Dark Magic
[MOV-EN002 Common]

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Axe of Despair
[LART-EN051 Ultra Rare]

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Rona, Herald of Invasion // Rona, Tolarian Obliterator
[March of the Machine]

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Invasion of New Phyrexia // Teferi Akosa of Zhalfir
[March of the Machine Prerelease Promos]

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Nightmare Apprentice
[LEDE-EN029 Secret Rare]

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Volo's Guide To Monsters

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Master of Cruelties
[The List]

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Brotherhood of the Fire Fist - Rhino
[LTGY-EN028 Rare]

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Reign-Beaux, Overlord of Dark World
[SDGU-EN014 Common]

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The Fabled Abanc
[MP22-EN010 Common]

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Ob Nixilis, Captive Kingpin (Showcase)
[March of the Machine: The Aftermath]

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Bone Archfiend
[SDCK-EN003 Common]

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Ob Nixilis, Captive Kingpin (Foil Etched)
[March of the Machine: The Aftermath]

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Jace, Wielder of Mysteries (Japanese Alternate Art)
[War of the Spark Promos]

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