Achieving the former is easy enough playing cards like Teferis Protection, Boros Charm, or Avacyn, Angel of Hope can mean your lands stick while everyone elses hit the bin
If you're in a removal-heavy meta and you know this weird card will get blown up before you get to put that third study counter on it, you might want to pass on Pursuit of Knowledge, but I like it enough to be willing to give it a try
Not only are they well supported in white but they have a lot of playable cards in black too
If an effect would prevent the next time a red or white source would deal damage, it wouldn't prevent Bahamut's damage, despite him being both red and white, since his damage's source is colorless
Oftentimes, restrictions breed creativity, and goodness knows there's restrictions abound when you're dealing with a Vehicle in the Command Zone