Territorial Hammerskull {2}{W}
Creature — Dinosaur
Whenever this creature attacks, tap target creature an opponent controls.
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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.
Rhox Veteran 100%
$0.10#23855
"Whenever this creature attacks, tap target creature an opponent controls."
Nimble Hobbit 88%
$0.09#20570
"Whenever this creature attacks, you may sacrifice a Food or pay {2}{W}. When you do, tap target creature an opponent controls."
Heliod's Emissary 86%
$0.06#20781
"Whenever this creature or enchanted creature attacks, tap target creature an opponent controls."
Hammers of Moradin 83%
$0.36#5525
"Whenever this creature attacks, for each opponent, tap up to one target creature that player controls."
Star-Crowned Stag 83%
$0.04#25613
"Whenever this creature attacks, tap target creature defending player controls."
Master of Diversion 83%
$0.04#26703
"Whenever this creature attacks, tap target creature defending player controls."
Distracting Geist // Clever Distraction 83%
$0.18#20415
"Whenever this creature attacks, tap target creature defending player controls."
Fiend Binder 83%
$0.03#27722
"Whenever this creature attacks, tap target creature defending player controls."
Haazda Snare Squad 82%
$0.07#27773
"Whenever this creature attacks, you may pay {W}. If you do, tap target creature an opponent controls."