Hidden Strings 
Sorcery
$0.29 #4193 0.33 13.3 years
You may tap or untap target permanent, then you may tap or untap another target permanent.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
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Cards similar to Hidden Strings 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.
Toils of Night and Day96%
$0.17↓#18188↓0.10↓21.6 years↑
"You may tap or untap target permanent, then you may tap or untap another target permanent."
Psychic Puppetry90%
$0.37↑#18461↓0.00↓21.9 years↑
"You may tap or untap target permanent."
Shadow Slice88%
$0.04↓#22576↓0.48↑13.6 years
"Cipher"
Hands of Binding88%
$0.19↓#15580↓0.3313.6 years
"Cipher"
+1 more matching line
Call of the Nightwing88%
$0.13↓#17169↓0.18↓13.6 years
"Cipher"
Pestermite86%
$0.25↓#10822↓0.50↑18.9 years↑
"When this creature enters, you may tap or untap target permanent."
Tidal Force86%
$0.51↑#16715↓0.13↓12.8 years
"At the beginning of each upkeep, you may tap or untap target permanent."
Writ of Return86%
$0.39↑#11408↓0.11↓4.4 years↓
"Cipher"
Paranoid Delusions86%
$0.14↓#16422↓0.59↑13.6 years
"Cipher"
Ral Zarek86%
$0.70↑#6065↓0.59↑13.3 years
"+1: Tap target permanent, then untap another target permanent."
Dream's Grip86%
$0.38↑#9301↓0.20↓22.9 years↑
"• Untap target permanent."
Reality Spasm85%
$0.60↑#11042↓0.2516.4 years↑
"• Untap X target permanents."
Last Thoughts84%
$0.18↓#17191↓0.06↓13.6 years
"Cipher"
Midnight Recovery84%
$0.13↓#19071↓0.3113.6 years
"Cipher"
Mental Vapors83%
$0.06↓#22893↓0.80↑13.6 years
"Cipher"
Trait Doctoring82%
$0.34↑#13440↓0.3613.3 years
"Cipher"
Burst of Energy82%
$0.16↓#18570↓0.53↑27.6 years↑
"Untap target permanent."
Captain of the Mists82%
$0.18↓#19787↓0.3614.3 years
", 
: You may tap or untap target permanent."
, : You may tap or untap target permanent."
Voidwalk82%
$0.22↓#13753↓0.20↓13.6 years
"Cipher"
Coral Trickster82%
$0.04↓#22568↓0.00↓19.9 years↑
"When this creature is turned face up, you may tap or untap target permanent."