Deceiver Exarch 

Creature — Phyrexian Cleric
$0.17 #13719 0.50 15.3 years
Flash (You may cast this spell any time you could cast an instant.)
When this creature enters, choose one —
• Untap target permanent you control.
• Tap target permanent an opponent controls.
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Cards similar to Deceiver Exarch 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.
Kelpie Guide90%
$0.23↑#4655↑0.17↓5.4 years↓
"
: Untap another target permanent you control."
+1 more matching line
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$0.23↑#117600.38↓1.0 years↓
"When this card enters, choose one or both —"
+1 more matching line
Pestermite87%
$0.25↑#10822↑0.5018.9 years↑
"When this creature enters, you may tap or untap target permanent."
Tidal Force85%
$0.51↑#16715↓0.13↓12.8 years↓
"At the beginning of each upkeep, you may tap or untap target permanent."
Toils of Night and Day85%
$0.17#18188↓0.10↓21.6 years↑
"You may tap or untap target permanent, then you may tap or untap another target permanent."
Ral Zarek84%
$0.70↑#6065↑0.5913.3 years↓
"+1: Tap target permanent, then untap another target permanent."
Rimewind Taskmage83%
$0.20↑#18267↓0.06↓20.1 years↑
"
,
: You may tap or untap target permanent. Activate only if you control four or more snow permanents."
Coral Trickster82%
$0.04↓#22568↓0.00↓19.9 years↑
"When this creature is turned face up, you may tap or untap target permanent."