Aethervoid Pendulum

Set up wholly within 6" of the caster. Set it up lengthwise in the direction you want it to move. Whenever it moves, move it in a straight line in
that direction.
It can move immediately after being set up.
It can move up to 8" and can fly.
It deals d6 mortal wounds to every unit it has
passed across and that was within 1" at the end
of the move.