Cheapest priced copy (Duskmourn: House of Horror Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Deluge of Doom 
Sorcery · Rare · Duskmourn: House of Horror Commander · #18
All creatures get -X/-X until end of turn, where X is the number of card types among cards in your graveyard.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror Commander | 18 | Rare | $0.49 | — |
| Duskmourn: House of Horror Commander | 48 | Rare | $0.49 | — |