Thundermare {5}{R}
Creature — Elemental Horse
Haste (This creature can attack and {T} as soon as it comes under your control.)
When this creature enters, tap all other creatures.
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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.
Timbermare 100%
$0.35#24936
"When this creature enters, tap all other creatures."
+1 more matching line
Shrieking Mogg 100%
$0.49#24639
"When this creature enters, tap all other creatures."
+1 more matching line