Spreading Plague 

Enchantment
$12.00 #16134 1.59 26.0 years
Whenever a creature enters, destroy all other creatures that share a color with it. They can't be regenerated.
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Cards similar to Spreading Plague 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.
Tsabo's Assassin82%
$0.67↓#25099↓0.04↓26.0 years
"
: Destroy target creature if it shares a color with the most common color among all permanents or a color tied for most common. A creature destroyed this way can't be regenerated."
Dead Ringers76%
$0.08↓#29152↓0.06↓25.4 years
"Destroy two target nonblack creatures unless either one is a color the other isn't. They can't be regenerated."
Serenity73%
$0.28↓#22295↓1.00↓29.4 years↑
"At the beginning of your upkeep, destroy all artifacts and enchantments. They can't be regenerated."
Mageta the Lion73%
$2.79↓#21519↓0.63↓26.4 years
"

,
, Discard two cards: Destroy all creatures except for Mageta. Those creatures can't be regenerated."
Plague Wind72%
$2.61↓#6575↑0.56↓26.4 years
"Destroy all creatures you don't control. They can't be regenerated."
Winds of Rath72%
$0.33↓#1692↑0.53↓29.0 years↑
"Destroy all creatures that aren't enchanted. They can't be regenerated."
Visara the Dreadful72%
$2.93↓#140030.00↓24.0 years↓
"
: Destroy target creature. It can't be regenerated."
Dark Hatchling71%
$0.13↓#189460.00↓28.0 years↑
"When this creature enters, destroy target nonblack creature. It can't be regenerated."
Nekrataal71%
$0.12↓#11489↑0.41↓29.7 years↑
"When this creature enters, destroy target nonartifact, nonblack creature. That creature can't be regenerated."
Wave of Terror70%
$0.88↓#29892↓0.31↓29.4 years↑
"At the beginning of your draw step, destroy each creature with mana value equal to the number of age counters on this enchantment. They can't be regenerated."