If you want to learn more about each of the products of Dominaria United , including breakouts of each of the booster products, I'd recommend Tim Brown's article with the full details
Landfall, in general, is a pretty low requirement to get some card draw
Any one-shot effects that are waiting "until [this] leaves the battlefield," such as that of Banishing Light, won't happen when a permanent phases out
I was a big fan of how Dominaria United utilized this structure to make a very approachable Limited environment
For example, compare the price of the Evolutions box against the Evolutions Charizard #11 Holo
After all, as more boxes are sold and opened without finding a Golden Chocobo, the odds for all other Collector Boosters having one increase