Primeval Herald {3}{G}
Creature — Elf Scout
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Whenever this creature enters or attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
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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.
Lumbering Worldwagon 87%
$1.08#4326
"Whenever this Vehicle enters or attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle."
Scampering Surveyor 80%
$0.29#4605
"When this creature enters, search your library for a basic land card or Cave card, put it onto the battlefield tapped, then shuffle."