Your search for "*monster of the abyss*" revealed the following:

Goblin Biker Grand Crisis
[ROTA-EN075 Common]

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The Hallowed Azamina
[ROTA-EN053 Super Rare]

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Fire King Courtier Ulcanix
[ROTA-EN098 Secret Rare]

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Abyssal Kingshark
[BP01-EN155 Common]

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EC Epitaphs From The Abyss #1 (Of 5) Cover E Blank Variant

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Abyssal Persecutor (Borderless)
[The Lord of the Rings: Tales of Middle-Earth Commander]

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The Pit
[March of the Machine Commander]

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EC Epitaphs From The Abyss #12 (Of 12) Cover A Lee Bermejo

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EC Epitaphs From The Abyss #1 (Of 5) Cover A Lee Bermejo

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EC Epitaphs From The Abyss #5 (Of 12) Cover A Lee Bermejo

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EC Epitaphs From The Abyss #3 (Of 12) Cover A Lee Bermejo (Mature)

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EC Epitaphs From The Abyss #8 (Of 12) Cover A Lee Bermejo

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EC Epitaphs From The Abyss #11 (Of 12) Cover A Lee Bermejo Variant

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EC Epitaphs From The Abyss #9 (Of 12) Cover A Lee Bermejo

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Abyssal Designator
[SOD-EN040 Common]

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EC Epitaphs From The Abyss #7 (Of 12) Cover A Lee Bermejo

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