Warpaint

When making a save roll for a Bonesplitterz model, a dice result of 6 (before modifiers) is always a successful save.
This means there is always a chance of passing a save roll, regardless of the attacks Rend.
Furthermore, roll a dice each time a Bonesplitterz model suffers a mortal wound;
on a 6, that mortal wound is ignored as the warpaint somehow saves the orruk from harm.