Stupefy

Put target creature an opponent controls on top
of its owner's library. That player then shuffles
their library.
Overload {4}{w}{w} (You may cast this spell for its
overload cost. If you do, change its text by replacing
all instances of "target" with "each.")
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"Stunning is one of the most useful spells in your
arsenal. It's sort of a wizard's bread and butter,
really."