Goblin Matron 

Creature — Goblin
$0.20 #1786 0.33 28.2 years
When this creature enters, you may search your library for a Goblin card, reveal that card, put it into your hand, then shuffle.
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Cards similar to Goblin Matron 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.
Boggart Harbinger91%
$0.35↑#10674↓0.11↓18.9 years↓
"When this creature enters, you may search your library for a Goblin card, reveal it, then shuffle and put that card on top."
Goblin Recruiter90%
$5.54↑#3333↓0.69↑29.6 years↑
"When this creature enters, search your library for any number of Goblin cards, reveal them, then shuffle and put those cards on top in any order."
Moggcatcher78%
$12.55↑#8804↓0.3526.6 years↓
"
,
: Search your library for a Goblin permanent card, put it onto the battlefield, then shuffle."
Auntie's Hovel76%
$7.94↑#10489↓0.13↓18.9 years↓
"As this land enters, you may reveal a Goblin card from your hand. If you don't, this land enters tapped."