Artifact — Equipment
Whenever
equipped
creature
attacks,
sacrifice
Karlov's
Crossbow
and
destroy
target
creature
an
opponent
controls.
Equip
Forecast
—
,
Reveal
Karlov's
Crossbow
from
your
hand:
For
the
remainder
of
the
game,
spells
you
cast
named
Karlov's
Crossbow
cost
less
to
cast.
(Activate
only
during
your
upkeep
and
only
once
each
turn.)