Undercover Crocodelf 


Creature — Elf Crocodile Detective
Whenever this creature deals combat damage to a player, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Disguise {3}{G/U}{G/U} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.)
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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.
Daring Sleuth // Bearer of Overwhelming Truths 100%
$0.06#18581
"Whenever this creature deals combat damage to a player, investigate."
The Rani 88%
$0.32#12921
"Whenever a goaded creature deals combat damage to one of your opponents, investigate."
Emperor's Vanguard 86%
$0.16#24647
"Whenever this creature deals combat damage to a player, it explores."
Inquisitor Eisenhorn 82%
$0.39#12990
"Whenever this card deals combat damage to a player, investigate that many times."