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.)
Choose
one
—
•
Shatter
the
Source
deals
6
damage
to
target
creature,
planeswalker,
or
battle.
•
Destroy
target
artifact.
