Cemetery Gatekeeper 

Creature — Vampire
$3.05 #7732 0.38 4.9 years
First strike
When this creature enters, exile a card from a graveyard.
Whenever a player plays a land or casts a spell, if it shares a card type with the exiled card, this creature deals 2 damage to that player.
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Cards similar to Cemetery Gatekeeper 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.
Cemetery Protector96%
$0.85↓#10650↓0.06↓4.9 years
"When this creature enters, exile a card from a graveyard."
+1 more matching line
Mirror Golem88%
$0.14↓#27927↓0.06↓23.0 years↑
"When this creature enters, you may exile target card from a graveyard."
Cemetery Prowler88%
$4.41↑#5667↑0.12↓4.9 years
"Whenever this creature enters or attacks, exile a card from a graveyard."
Cemetery Illuminator84%
$0.59↓#12222↓0.12↓4.9 years
"Whenever this creature enters or attacks, exile a card from a graveyard."
Mourner's Shield76%
$0.16↓#27364↓0.2923.0 years↑
"When this artifact enters, you may exile target card from a graveyard."
Ambush Wolf75%
$0.22↓#15646↓0.361.9 years↓
"When this creature enters, exile up to one target card from a graveyard."
Soul-Guide Gryff74%
$0.07↓#27113↓0.06↓5.1 years
"When this creature enters, exile up to one target card from a graveyard."
Disposal Mummy74%
$0.03↓#28182↓0.17↓9.3 years↑
"When this creature enters, exile target card from an opponent's graveyard."
Scavenging Harpy72%
$0.06↓#30275↓0.00↓6.7 years↑
"When this creature enters, exile target card from an opponent's graveyard."
Pit of Offerings72%
$0.42↓#3535↑0.12↓2.9 years↓
"When this land enters, exile up to three target cards from graveyards."