Lens of Clarity 
Artifact
$0.07 #19448 0.33 12.1 years
You may look at the top card of your library and at face-down creatures you don't control any time.
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Cards similar to Lens of Clarity 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.
Keeper of the Lens92%
$0.15↑#25361↓0.2411.6 years
"You may look at face-down creatures you don't control any time."
Found Footage86%
$0.17↑#185450.00↓2.1 years↓
"You may look at face-down creatures your opponents control any time."
Lumbering Laundry84%
$0.10↑#28944↓0.06↓2.7 years↓
"
: Until end of turn, you may look at face-down creatures you don't control any time."
: Until end of turn, you may look at face-down creatures you don't control any time."
Spy Network80%
$0.17↑#13082↑0.3324.0 years↑
"Look at target player's hand, the top card of that player's library, and any face-down creatures they control. Look at the top four cards of your library, then put them back in any order."
Smoke Teller80%
$0.03↓#32158↓0.00↓12.1 years
"
: Look at target face-down creature."
: Look at target face-down creature."
Aven Soulgazer78%
$0.17↑#31863↓0.00↓24.0 years↑
"
: Look at target face-down creature."
: Look at target face-down creature."
Sphinx of Jwar Isle78%
$0.22↑#199320.00↓17.0 years↑
"You may look at the top card of your library any time."
Iron Lad, Diverging Destiny75%
$0.20↑#11197↑0.11↓0.3 years↓
"You may look at the top card of your library any time."
Vesuvan Drifter70%
$0.29↑#10558↑0.07↓3.4 years↓
"You may look at the top card of your library any time."
Daredevil, Man Without Fear70%
$0.28↑#12447↑0.16↓0.3 years↓
"You may look at the top card of your library any time."