Huskburster Swarm 

Creature — Elemental Insect
$0.31 #7566 0.35 2.1 years
This spell costs
less to cast for each creature card you own in exile and in your graveyard.
Menace, deathtouch
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Cards similar to Huskburster Swarm 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.
Writhing Necromass94%
$0.18↓#16267↓0.07↓4.0 years↑
"This spell costs
less to cast for each creature card in your graveyard."
+1 more matching line
Ghoultree94%
$0.28↓#10826↓0.3514.6 years↑
"This spell costs
less to cast for each creature card in your graveyard."
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"This spell costs
less to cast for each creature card in your graveyard."
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$0.15↓#11609↓0.12↓2.4 years
"This spell costs
less to cast for each creature card in your graveyard."
Nemesis of Mortals90%
$0.09↓#19196↓0.50↑12.9 years↑
"This spell costs
less to cast for each creature card in your graveyard."
Cyan, Vengeful Samurai89%
$0.19↓#10441↓0.281.2 years
"This spell costs
less to cast for each creature card in your graveyard."
Molderhulk88%
$0.23↓#14916↓0.00↓7.9 years↑
"This spell costs
less to cast for each creature card in your graveyard."
Chitin Gravestalker88%
$0.21↓#13310↓0.08↓1.6 years
"This spell costs
less to cast for each artifact and/or creature card in your graveyard."
Karador, Ghost Chieftain86%
$0.33↑#10601↓0.20↓15.2 years↑
"This spell costs
less to cast for each creature card in your graveyard."
Diamond Weapon86%
$0.33↑#5286↑0.24↓1.2 years
"This spell costs
less to cast for each permanent card in your graveyard."
The Cauldron of Eternity83%
$1.64↑#9350↓0.366.9 years↑
"This spell costs
less to cast for each creature card in your graveyard."
Ore-Scale Guardian71%
$0.18↓#27116↓0.00↓7.2 years↑
"This spell costs
less to cast for each land card in your graveyard."