Death Match {3}{B}
Enchantment
Whenever a creature enters, that creature's controller may have target creature of their choice get -3/-3 until end of turn.
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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.
Vengeful Rebel 91%
$0.04#27965
"When this creature enters, if a permanent left the battlefield under your control this turn, target creature an opponent controls gets -3/-3 until end of turn."
Fourth Bridge Prowler 89%
$0.18#14105
"When this creature enters, you may have target creature get -1/-1 until end of turn."
Morkrut Banshee 89%
$0.12#24735
"When this creature enters, if a creature died this turn, target creature gets -4/-4 until end of turn."
Ubul Sar Gatekeepers 88%
$0.08#25580
"When this creature enters, if you control two or more Gates, target creature an opponent controls gets -2/-2 until end of turn."