Enchantment
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.)
If
a
land
is
tapped
for
mana,
it
produces
colorless
mana
instead
of
any
other
type.