I've never played Han a lot, so excuse what is probably an OLD question/issue.
Han's ability says that he must re-roll all dice possible. I know that dice can only be re-rolled once, so a die or two re-rolled by Predator would be immune to Han's ability, allowing you to re-roll the remaining unaltered results. Therefore a spent target lock would null his ability if all dice were re-rolled.
That covers physically re rolled dice. My question is twofold:
a) What about cards that read "change x result to y," (ie. is that technically a modified die and does that make it immune to Han's "all dice possible?")
b) When may Han use his ability? Must it come before all other result manipulation, or can I wait until after I have influenced the dice pool as much as I can?
Thank you very much for your input in advance.