Booby Trap 
Artifact
$0.59 #24178 0.16 29.0 years
As this artifact enters, choose an opponent and a card name other than a basic land card name.
The chosen player reveals each card they draw.
When the chosen player draws a card with the chosen name, sacrifice this artifact. If you do, this artifact deals 10 damage to that player.
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Cards similar to Booby Trap 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.
Pithing Needle77%
$0.40↓#6545↑0.89↑21.4 years↓
"As this artifact enters, choose a card name."
Runed Halo74%
$0.15↓#19130↑0.69↑18.5 years↓
"As this enchantment enters, choose a card name."
Black Vise72%
$0.47↓#11006↑0.31↑33.2 years↑
"As this artifact enters, choose an opponent."
+1 more matching line
Sorcerous Spyglass72%
$0.08↓#16502↑0.38↑9.1 years↓
"As this artifact enters, look at an opponent's hand, then choose any card name."
Declaration of Naught72%
$15.06↑#18330↑1.00↑18.7 years↓
"As this enchantment enters, choose a card name."
Brain Pry72%
$0.16↓#276340.28↑20.5 years↓
"Choose a nonland card name. Target player reveals their hand. That player discards a card with that name. If they can't, you draw a card."
The Rack71%
$0.44↓#16879↑0.79↑32.6 years↑
"As this artifact enters, choose an opponent."
+1 more matching line
Pallimud70%
$0.42↓#30810↓0.36↑29.0 years
"As this creature enters, choose an opponent."
Null Chamber70%
$1.66↑#260410.78↑30.0 years↑
"As this enchantment enters, you and an opponent each choose a card name other than a basic land card name."