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.)
When
this
enchantment
enters,
you
gain
20
life.
When
this
enchantment
leaves
the
battlefield,
you
lose
20
life.
