mage
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Refactor: make a common effect for "If [Condition], {this} enters the battlefield tapped."
Similar to #12411, the TapSourceEffect
should use the argument to not cause triggers.
https://scryfall.com/search?q=o%3A%2Fif.*%2C+%7E+enters+the+battlefield+tapped.%2F+&unique=cards&as=grid&order=name