Artifact — Attraction
Visit
—
Return
a
creature
you
don't
control
with
the
lowest
toughness
among
creatures
you
don't
control
to
its
owner's
hand.
(If
multiple
creatures
are
tied,
choose
any
one
of
them.)
The Astrotorium bouncing record is three days, though setting it wasn't strictly intentional.