Instant
Clash
with
an
opponent,
then
return
target
creature
to
its
owner's
hand.
If
you
win,
you
may
put
that
creature
on
top
of
its
owner's
library
instead.
(Each
clashing
player
reveals
the
top
card
of
their
library,
then
puts
that
card
on
their
choice
of
the
top
or
bottom.
A
player
wins
if
their
card
had
a
greater
mana
value.)