Emissary of Grudges {5}{R}
Creature — Efreet
Flying, haste
As this creature enters, secretly choose an opponent.
Reveal the player you chose: Choose new targets for target spell or ability if it's controlled by the chosen player and if it targets you or a permanent you control. Activate only once.
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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.
Guardian Archon 100%
$0.21#23024
"As this creature enters, secretly choose an opponent."
+1 more matching line
Stalking Leonin 100%
$0.27#9259
"When this creature enters, secretly choose an opponent."
+1 more matching line