31 cards where (the text includes “for each creature card in your graveyard.” or the text includes “for each creature card in their graveyard.”)

Battlefield Butcher (The Brothers' War #86)
Fiend Artisan (Ikoria: Lair of Behemoths #220)
Ghoultree (Dark Ascension #115)
Gnaw to the Bone (Innistrad #183)
Golgari Grave-Troll (Ravnica Remastered #144)
Golgari Raiders (Guilds of Ravnica #130)
Grave Strength (Ultimate Masters #101)
Grim Flowering (Commander Anthology #114)
Hollow Marauder (Outlaws of Thunder Junction #90)
Izoni, Thousand-Eyed (Guilds of Ravnica #180)
Jarad, Golgari Lich Lord (Commander Anthology #179)
Karador, Ghost Chieftain (Commander Masters #342)
Kessig Cagebreakers (Midnight Hunt Commander #142)
Kraul Foragers (Guilds of Ravnica #135)
Liliana, Death Mage (Core Set 2021 #328)
Liliana's Elite (Double Masters 2022 #82)
Lotleth Giant (Commander Masters #171)
Molderhulk (Guilds of Ravnica #190)
Moldgraf Millipede (Innistrad: Crimson Vow #209)
Nature's Resurgence (Seventh Edition #259)
Nemesis of Mortals (Theros #163)
Overwhelming Remorse (The Brothers' War #110)
Skyfisher Spider (The Brothers' War #221)
Songs of the Damned (Ultimate Masters #115)
Spider Spawning (Double Masters 2022 #158)
The Cauldron of Eternity (Throne of Eldraine #82)
Tombstone Stairwell (Mirage #149)
Vilespawn Spider (Innistrad: Crimson Vow #250)
Wight of the Reliquary (Modern Horizons 3 #207)
Writhing Necromass (Dominaria United #115)
Zombie Mob (Mirage #153)

The arc of my blade has carved a path of light to the end of these results.