Instant
Convoke
(Your
creatures
can
help
cast
this
spell.
Each
creature
you
tap
while
casting
this
spell
pays
for
or
one
mana
of
that
creature's
color.)
Prevent
all
damage
that
would
be
dealt
by
creatures
this
turn.
You
gain
life
equal
to
the
damage
prevented
this
way.
