Creature — Elemental
Echo
(At
the
beginning
of
your
upkeep,
if
this
came
under
your
control
since
the
beginning
of
your
last
upkeep,
sacrifice
it
unless
you
pay
its
echo
cost.)
When
this
creature
enters
or
leaves
the
battlefield,
it
deals
1
damage
to
each
creature
without
flying.
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