Correct me if I'm wrong, but it was always my understanding the Spirit Guidance only applied on the "to hit" roll. From what you're saying, it seems to me that you can also use it on the damage roll. Is that correct?
Rules v.2.4. p33:
Rolling to Hit
When a unit attacks, roll dice equal to its
attack dice. Each die roll less than or equal to the attacker’s offensive skill minus the defender’s defensive skill will hit.
Rolling to Damage
Each die that hits is rolled again to see if the hit is hard enough to do damage. Each die roll less then or equal to the attacker’s power minus the defender’s
toughness will do one damage.
Spirit Guidance - " to change the result of one of that unit's Attack Dice to a "2". This counts as playing a Command Card."
The only differentiation for "Rolling to Hit" and "Rolling to Damage" is the sequence and the results of comparing different combat values of the units.
To do so you use a unit's "
attack dice." Which is not clearly defined other than the dice used to roll, the number of which is given on the unit card are "equal to its
attack dice".
After the first roll to hit, then the unit's
attack dice may be a new quantity - but they seem to be still
attack dice.
One way to read this is that the WHOLE Resolution, both "Rolling to Hit" and "Rolling to Damage" of the Combat Roll constitutes using attack dice.
This is supported by the phrase "Each die that hits is rolled again", thus implying that the
attack dice are still used. It could be written as Each Attack Die that hits is rolled again.
If that is so then Spirit Guidance may be used for changing an Attack Die in either sequence, to Hit or to Damage.
Illuminating to me also.