Artifact
At
the
beginning
of
your
end
step,
target
opponent
gains
control
of
this
artifact
and
puts
a
charge
counter
on
it.
At
the
beginning
of
your
upkeep,
this
artifact
deals
damage
to
you
equal
to
the
number
of
charge
counters
on
it.
:
Put
a
charge
counter
on
this
artifact
or
remove
one
from
it.
