Artifact
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
tapped
for
mana,
Plains
produce
,
Islands
produce
,
Swamps
produce
,
Mountains
produce
,
and
Forests
produce
instead
of
any
other
type.
