Assault of Stone

Assault of Stone has a casting value of 8.
If successfully cast, pick 1 enemy unit wholly
within 24" of the caster and visible to them, and
roll a number of dice equal to the casting roll.
For each roll that is less than that unit's Save
characteristic, that unit suffers 1 mortal wound.
Rolls of 1 or 2 always fail to inflict a mortal
wound on the target. A Save characteristic of '-'
counts as a 6 for the purposes of this rule.