Cao Ren, Wei Commander {2}{B}{B}
Legendary Creature — Human Soldier Warrior
Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
When Cao Ren enters, you lose 3 life.
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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.
Lord of Tresserhorn 98%
#21177
"When this card enters, you lose 2 life, you sacrifice two creatures, and target opponent draws two cards."
Ramirez DePietro, Pillager 93%
$0.20#5085
"When this card enters, you lose 2 life and create two Treasure tokens."
Be'lakor, the Dark Master 83%
#7369
"When this card enters, you draw X cards and you lose X life, where X is the number of Demons you control."
Bellowing Saddlebrute 82%
$0.08#29037
"When this creature enters, you lose 4 life unless you attacked this turn."
Fathom Fleet Boarder 81%
$0.05#28022
"When this creature enters, you lose 2 life unless you control another Pirate."
Polygraph Orb 81%
$0.08#22765
"When this artifact enters, look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard. You lose 2 life."
Champion of Dusk 81%
$0.22#3502
"When this creature enters, you draw X cards and you lose X life, where X is the number of Vampires you control."
Namazu Trader 80%
$0.11#19467
"When this creature enters, you lose 1 life and create a Treasure token."
Triarch Praetorian 80%
$1.47#9028
"When this creature enters from a graveyard, you draw two cards and you lose 2 life."