Vizier of the True 

Creature — Human Cleric
$0.04 #28679 0.25 9.1 years
You may exert this creature as it attacks. (It won't untap during your next untap step.)
Whenever you exert a creature, tap target creature an opponent controls.
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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.
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