Cards
Ancestral Knowledge
{1}{U}
Enchantment
Cumulative
upkeep
{1}
(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,
look
at
the
top
ten
cards
of
your
library,
then
exile
any
number
of
them
and
put
the
rest
back
on
top
of
your
library
in
any
order.
When
this
enchantment
leaves
the
battlefield,
shuffle
your
library.
 
Ancestral Knowledge
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