Knight of Mars

Once per battle, after rolling a D6 or a D3
when making an Advance roll, hit roll,
wound roll, damage roll, charge roll or saving
throw for this Warlord, after any re-rolls
(if any) have been made, you can change the
result of one of those dice to be a 6 (or, in the
case of a D3, a 3).
While your army is Virtuous, this Warlord
can use the above rule once per turn, instead
of once per battle.