Bitterthorn, Nissa's Animus {3}
Legendary Artifact — Equipment
Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.)
Equipped creature gets +1/+1.
Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
Equip {3}
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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.
Sword of the Animist 100%
$7.23#238
"Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle."
+2 more matching lines
Hiveheart Shaman 86%
$0.16#25950
"Whenever this creature attacks, you may search your library for a basic land card that doesn't share a land type with a land you control, put that card onto the battlefield, then shuffle."