Spirit Shield {3}
Artifact
You may choose not to untap this artifact during your untap step.
{2}, {T}: Target creature gets +0/+2 for as long as this artifact remains tapped.
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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.
Tawnos's Weaponry 100%
#31343
"{2}, {T}: Target creature gets +1/+1 for as long as this artifact remains tapped."
+1 more matching line
Endoskeleton 100%
$0.22#27874
"{2}, {T}: Target creature gets +0/+3 for as long as this artifact remains tapped."
+1 more matching line
Zelyon Sword 91%
$0.86#30405
"{3}, {T}: Target creature gets +2/+0 for as long as this artifact remains tapped."
+1 more matching line
Entrancing Lyre 100%
$0.11#22944
"You may choose not to untap this artifact during your untap step."
Thran Weaponry 100%
$0.32#30517
"You may choose not to untap this artifact during your untap step."
+1 more matching line
Vedalken Shackles 100%
$7.66#11447
"You may choose not to untap this artifact during your untap step."
+1 more matching line
Deserter's Quarters 100%
$0.05#29280
"You may choose not to untap this artifact during your untap step."
+1 more matching line
Helm of Possession 100%
$5.07#14749
"You may choose not to untap this artifact during your untap step."
+1 more matching line
Elaborate Firecannon 95%
$0.05#28481
"This artifact doesn't untap during your untap step."
+1 more matching line
Unwinding Clock 91%
$18.72#545
"Untap all artifacts you control during each other player's untap step."
Static Orb 90%
$14.92#5728
"As long as this artifact is untapped, players can't untap more than two permanents during their untap steps."