Manifold Key {1}
Artifact
{1}, {T}: Untap another target artifact.
{3}, {T}: Target creature can't be blocked this turn.
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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.
Sonic Screwdriver 100%
$3.04#1880
"{3}, {T}: Target creature can't be blocked this turn."
+1 more matching line
Synod Artificer 90%
$0.36#23763
"{X}, {T}: Untap X target noncreature artifacts."
+1 more matching line
Joven's Tools 83%
$0.13#28248
"{4}, {T}: Target creature can't be blocked this turn except by Walls."
Magewright's Stone 80%
$9.77#2879
"{1}, {T}: Untap target creature that has an activated ability with {T} in its cost."