Cheapest priced copy (The List): $6.99 at Card Kingdom, near mint, their price list as of .
Rain of Filth 
Instant · Uncommon · Urza's Saga · #151
Until end of turn, lands you control gain "Sacrifice this land: Add {B}."
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $6.99 to $64.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The List | USG-151 | Uncommon | $6.99 | — |
| Secret Lair Drop | 1547 | Rare | $39.99 | — |
| Secret Lair Drop | 1547★ | Rare | — | $64.99 |
| Urza's Saga | 151 | Uncommon | $9.49 | — |
2 rulings from Wizards of the Coast
- 4 October 2004Only grants the ability to lands you control when this ability resolves.
- 4 October 2004The granted ability can be used while the land is tapped.