Captain of the Mists 

Creature — Human Wizard
Whenever another Human you control enters, untap this creature.
{1}{U}, {T}: You may tap or untap target permanent.
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Cards that do something similar expected a card that isn't here?
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Toils of Night and Day 80%
$0.17#17859
"You may tap or untap target permanent, then you may tap or untap another target permanent."