Cheapest priced copy (Commander Legends): $0.35 at Card Kingdom, near mint, their price list as of .
Ghastly Demise 
Instant · Common · Odyssey · #139
Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
3 printings · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 129 | Common | $0.35 | $0.49 |
| Odyssey | 139 | Common | $0.35 | $2.99 |
| World Championship Decks 2002 | cr139sb | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 10 November 2020Because Ghastly Demise isn't put into your graveyard until it's finished resolving, it won't be counted when determining whether the creature is destroyed.
- 10 November 2020Ghastly Demise can target any nonblack creature. Compare the creature's toughness to the number of cards in your graveyard as Ghastly Demise resolves to see if that creature is destroyed.