Barbed Servitor {3}{B}
Artifact Creature — Construct
Indestructible
When this creature enters, suspect it. (It has menace and can't block.)
Whenever this creature deals combat damage to a player, you draw a card and you lose 1 life.
Whenever this creature is dealt damage, target opponent loses that much 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.
Person of Interest 99%
$0.04#25165
"When this creature enters, suspect it. Create a 2/2 white and blue Detective creature token."
Snooping Page 98%
$0.17#19392
"Whenever this creature deals combat damage to a player, you draw a card and lose 1 life."
Black Widow, Deadly Hunter 90%
$2.50#20178
"Whenever a creature you control with deathtouch deals combat damage to a player, you draw a card and lose 1 life."
Oroku Saki, Shredder Rising 89%
$0.17#13857
"Whenever this card deals combat damage to a player, you draw a card and lose 1 life."
Yathan Tombguard 88%
$0.30#10326
"Whenever a creature you control with a counter on it deals combat damage to a player, you draw a card and you lose 1 life."
Elegy Acolyte 88%
$0.31#5737
"Whenever one or more creatures you control deal combat damage to a player, you draw a card and lose 1 life."
Mindblade Render 85%
$0.24#5840
"Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life."
Kain, Traitorous Dragoon 84%
$0.27#8377
"Whenever this card deals combat damage to a player, that player gains control of this card. If they do, you draw that many cards, create that many tapped Treasure tokens, then lose that much life."
Preacher of the Schism 82%
$1.19#4584
"Whenever this creature attacks while you have the most life or are tied for most life, you draw a card and you lose 1 life."
Mastermind Plum 81%
$1.90#6705
"Whenever you cast a spell, if mana from a Treasure was spent to cast it, you draw a card and you lose 1 life."
Ludevic, Necro-Alchemist 80%
#13644
"At the beginning of each player's end step, that player may draw a card if a player other than you lost life this turn."