Cards similar to Metal Fatigue 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.
Roaring Slagwurm86%
$0.33↑#22375↑0.4422.6 years
"Whenever this creature attacks, tap all artifacts."
Rust Tick82%
$0.22↑#261840.71↑15.9 years↓
"
,
: Tap target artifact. It doesn't untap during its controller's untap step for as long as this creature remains tapped."
Kill Switch82%
$4.30↑#16433↑0.64↑26.6 years↑
"
,
: Tap all other artifacts. They don't untap during their controllers' untap steps for as long as this artifact remains tapped."
Phyrexian Gremlins76%
$1.05↑#304250.33↓32.5 years↑
"
: Tap target artifact. It doesn't untap during its controller's untap step for as long as this creature remains tapped."
Glare of Subdual74%
$0.54↑#11560↑0.61↑20.9 years↓
"Tap an untapped creature you control: Tap target artifact or creature."
Hum of the Radix74%
$0.50↑#22723↑0.86↑22.9 years
"Each artifact spell costs
more to cast for each artifact its controller controls."