Instant
Choose
a
source
you
control
and
flip
a
coin.
If
you
win
the
flip,
the
next
time
that
source
would
deal
damage
this
turn,
it
deals
double
that
damage
instead.
If
you
lose
the
flip,
the
next
time
it
would
deal
damage
this
turn,
prevent
that
damage.
