14 cards where the name includes “abyss”

Abyssal Gatekeeper (Duel Decks Anthology: Divine vs. Demonic #31)
Abyssal Gorestalker (The Lost Caverns of Ixalan #87)
Abyssal Harvester (Foundations #54)
Abyssal Horror (Seventh Edition #115)
Abyssal Hunter (Classic Sixth Edition #109)
Abyssal Nightstalker (Portal Second Age #61)
Abyssal Nocturnus (Guildpact #43)
Abyssal Persecutor (Iconic Masters #78)
Abyssal Specter (Modern Masters 2017 #59)
Magus of the Abyss (Double Masters #97)
Peer into the Abyss (Core Set 2021 #117)
Reaper from the Abyss (Commander 2014 #159)
The Abyss (Masters Edition III #77)
Zzzyxas's Abyss (Unhinged #70)

It is the moment of discovery, the triumph of the mind, and the end of these results.