Enchantment
When
this
enchantment
enters,
you
become
the
monarch.
At
the
beginning
of
your
upkeep,
exile
the
top
card
of
target
opponent's
library.
You
may
play
that
card
for
as
long
as
it
remains
exiled,
and
mana
of
any
type
can
be
spent
to
cast
it.
If
you're
the
monarch,
until
end
of
turn,
you
may
cast
a
spell
from
among
cards
exiled
with
this
enchantment
without
paying
its
mana
cost.