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

Paths of the Dead - Cavern of Souls (Surge Foil Realms and Relics)
[The Lord of the Rings: Tales of Middle-Earth Commander]

Sold Out

Zombyra the Dark
[BP02-EN014 Mosaic Rare]

Sold Out

Mobius the Frost Monarch
[SOD-EN022 Ultimate Rare]

Sold Out

Gravekeeper's Assailant
[TU02-EN002 Super Rare]

Sold Out

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

Sold Out

Orcust Harp Horror
[BLTR-EN071 Ultra Rare]

Sold Out

St. Joan
[LON-EN045 Common]

Sold Out

Kogla, the Titan Ape
[Ikoria: Lair of Behemoths]

Sold Out

Inscription of Abundance
[March of the Machine Commander]

Sold Out

Terra the Terrible
[LOB-080 Common]

Sold Out

Excise the Imperfect (Extended Art)
[March of the Machine Commander]

Sold Out

Thopter Assembly
[March of the Machine Commander]

Sold Out

Red-Eyes Darkness Metal Dragon
[SDAZ-EN007 Common]

Sold Out

Aclazotz, Deepest Betrayal // Temple of the Dead (Showcase)
[The Lost Caverns of Ixalan]

Sold Out

Mount Doom (Borderless Poster)
[The Lord of the Rings: Tales of Middle-Earth]

Sold Out

Masked Beast Des Gardius
[TAEV-ENSE1 Super Rare]

Sold Out