that's an interessant new question:
i agree that rhino hide can be revealed after the roll step: it doesn't affect it (but it must be revealed befor the damage step).
but i think bear strenght must be revealed befor the roll step: after it's to late to interfer with the rolling
I agree with both of these statements...
if i understand well, for you A's favor can interfere with the rolling after the roll step, but bear strength cannot.
it means that A's favor would follow a different rull than bear strength. something like: a rull for "normal effects" and a rull for "counter&modifiing effects".
am i right?
This is also the way I see it.
In my "imaginary" view I posted before, assembling dice is step 3, showing the potential strength of the blow. Giving yourself more muscles with bear strength can give you more dice. Giving yourself the muscles after you roll it doesn't count.
1) declare
2) dodge (dodge/block/reverse attack, fumble ... during this step)
3) Assemble dice (bear strength, ... before this step)
4) Roll dice
5) re-roll dice (AF before this one)
6) apply damage (Rhino hide before this one)
Akiro is not really affecting your blow, but more or less protecting you for bad luck. Favoring you in battle.