Eternal Scourge 
Creature — Eldrazi Horror
You may cast this card from exile.
When this creature becomes the target of a spell or ability an opponent controls, exile this creature.
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Cards that do something similar 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.
Gale's Redirection 91%
$0.35#8931
"You may cast the exiled card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell."
Helbrute 89%
$0.28#19614
"You may cast this card from your graveyard by exiling another creature card from your graveyard in addition to paying its other costs."
Haakon, Stromgald Scourge 88%
$0.83#6744
"You may cast this card from your graveyard, but not from anywhere else."
Rona, Sheoldred's Faithful 84%
$0.10#13094
"You may cast this card from your graveyard by discarding two cards in addition to paying its other costs."
Me, the Immortal 84%
$0.30#15041
"You may cast this card from your graveyard by discarding two cards in addition to paying its other costs."
Sabin, Master Monk 84%
$0.19#11576
"You may cast this card from your graveyard using its blitz ability."
Tenacious Underdog 84%
$0.38#10893
"You may cast this card from your graveyard using its blitz ability."
Dragon Man, Reformed Robot 84%
$0.19#26598
"You may cast this card from your graveyard by discarding a card in addition to paying its other costs."
Alien Symbiosis 84%
$0.36#11657
"You may cast this card from your graveyard by discarding a card in addition to paying its other costs."
Spider-Man 2099 82%
$0.67#8063
"You can't cast this card during your first, second, or third turns of the game."
Serra Avenger 82%
$0.56#11778
"You can't cast this card during your first, second, or third turns of the game."
Jace Reawakened 82%
$0.69#7422
"You can't cast this card during your first, second, or third turns of the game."
Grasping Giant 81%
$0.59#19611
"Whenever this creature becomes blocked by a creature, exile that creature until this creature leaves the battlefield."