Enchantment
At
the
beginning
of
your
upkeep,
exile
the
top
card
of
your
library.
You
may
play
that
card
this
turn.
At
the
beginning
of
your
end
step,
if
you
didn't
play
a
card
from
exile
this
turn,
create
a
tapped
Powerstone
token.
(It's
an
artifact
with
"
:
Add
.
This
mana
can't
be
spent
to
cast
a
nonartifact
spell.")
