Hoarfrost

Hoarfrost has a range of 12". If cast, pick 1
friendly unit wholly within range and visible to
the caster. Pick 1 melee weapon profile on that
unit's warscroll and roll a D3. Change the To
Hit, To Wound or Rend characteristic of that
melee weapon to match the result until the start
of your next hero phase. While a characteristic
has been changed by the effects of this spell, that
characteristic cannot be further changed or
modified.