Animate construct

It is assumed that the spellcaster has built a
construct prior to using this spell to animate it.
If the spell is successfully cast, the construct immediately
becomes a member of the warband, taking
the place of a soldier. A spellcaster may declare that
he is attempting to animate a construct of any size ,
but the larger the construct,
the harder it is to animate,
so the following modifiers are applied to his roll
to cast the spell: Small -0, Medium -3, Large -6.