Rain of Filth 
Instant
$5.08 #3226 0.38 28.0 years
Until end of turn, lands you control gain "Sacrifice this land: Add ."
."Click a line or tag to filter
Cards similar to Rain of Filth expected a card that isn't here?
Reports become test cases the matcher is graded against before an update ships. Delvefall isn't a chatbot guessing, it compares the printed rules text of every card with plain math, and examples like yours decide which differences should count.
Mana Seism82%
$0.21↓#21953↓0.06↓22.1 years↓
"Sacrifice any number of lands, then add that much 
."
."
Overlaid Terrain72%
$2.09↓#20792↓0.06↓26.7 years↓
"Lands you control have "
: Add two mana of any one color.""
: Add two mana of any one color.""
Divergent Growth71%
$0.13↓#26803↓0.07↓23.4 years↓
"Until end of turn, lands you control gain ": Add one mana of any color.""
: Add one mana of any color.""
Squandered Resources70%
$84.42↑#5403↓0.60↑29.7 years↑
"Sacrifice a land: Add one mana of any type the sacrificed land could produce."
Pyretic Ritual70%
$6.03↑#709↑0.3416.3 years↓
"Add 
."
."