Enchantment
Cast
this
spell
only
if
you
control
a
snow
land.
Cumulative
upkeep
(At
the
beginning
of
your
upkeep,
put
an
age
counter
on
this
permanent,
then
sacrifice
it
unless
you
pay
its
upkeep
cost
for
each
age
counter
on
it.)
Creatures
with
flying
don't
untap
during
their
controllers'
untap
steps.
