While it remains to be seen how impactful this card will be, Im already seeing people talk about it as a potential cEDH inclusion
As mentioned earlier, fighting isnt attacking or blocking either, so even if both creatures have trample, no excess damage will be dealt to either player
If Collective Resistance is copied, the effect that creates the copy will usually allow you to choose new targets, but you can't choose new modes
As you can see in the top left, this card is named Walking Corpse and its mana cost is one generic mana and one black mana (often shortened to one and a black or one black)
That said, there are far more non-Outlaw creatures than Outlaw creatures out there, giving you plenty of targets for Shoot the Sherriff to shoot